Home / 398,309,179,243.98-549,668,323,439.41-215,406,280,888.66

Finding the Fourth Proportional to 398,309,179,243.98, 549,668,323,439.41 and 215,406,280,888.66

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Solution

The fourth proportional to 398,309,179,243.98, 549,668,323,439.41 and 215,406,280,888.66 is: 297,261,563,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,309,179,243.98 : 549,668,323,439.41 = 215,406,280,888.66 : x
  2. Step 2: Convert to fraction form
    398,309,179,243.98/549,668,323,439.41 = 215,406,280,888.66/x
  3. Step 3: Cross multiply
    398,309,179,243.98x = 549,668,323,439.41 × 215,406,280,888.66
  4. Step 4: Simplify right side
    398,309,179,243.98x = 118,402,009,274,388,368,588,800
  5. Step 5: Solve for x
    x = 118,402,009,274,388,368,588,800/398,309,179,243.98
  6. Step 6: Final answer
    x = 297,261,563,238.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.