Home / 398,309,179,252.35-549,668,323,451.15-215,406,280,897.12

Finding the Fourth Proportional to 398,309,179,252.35, 549,668,323,451.15 and 215,406,280,897.12

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Solution

The fourth proportional to 398,309,179,252.35, 549,668,323,451.15 and 215,406,280,897.12 is: 297,261,563,250.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,309,179,252.35 : 549,668,323,451.15 = 215,406,280,897.12 : x
  2. Step 2: Convert to fraction form
    398,309,179,252.35/549,668,323,451.15 = 215,406,280,897.12/x
  3. Step 3: Cross multiply
    398,309,179,252.35x = 549,668,323,451.15 × 215,406,280,897.12
  4. Step 4: Simplify right side
    398,309,179,252.35x = 118,402,009,281,567,439,978,496
  5. Step 5: Solve for x
    x = 118,402,009,281,567,439,978,496/398,309,179,252.35
  6. Step 6: Final answer
    x = 297,261,563,250.48

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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.