Home / 398,309,179,245.48-549,668,323,441.48-215,406,280,890.16

Finding the Fourth Proportional to 398,309,179,245.48, 549,668,323,441.48 and 215,406,280,890.16

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Solution

The fourth proportional to 398,309,179,245.48, 549,668,323,441.48 and 215,406,280,890.16 is: 297,261,563,240.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,309,179,245.48 : 549,668,323,441.48 = 215,406,280,890.16 : x
  2. Step 2: Convert to fraction form
    398,309,179,245.48/549,668,323,441.48 = 215,406,280,890.16/x
  3. Step 3: Cross multiply
    398,309,179,245.48x = 549,668,323,441.48 × 215,406,280,890.16
  4. Step 4: Simplify right side
    398,309,179,245.48x = 118,402,009,275,658,756,161,536
  5. Step 5: Solve for x
    x = 118,402,009,275,658,756,161,536/398,309,179,245.48
  6. Step 6: Final answer
    x = 297,261,563,240.77

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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.