Home / 215,480,387.70-323,220,581.55-129,386,945.70

Finding the Fourth Proportional to 215,480,387.70, 323,220,581.55 and 129,386,945.70

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Solution

The fourth proportional to 215,480,387.70, 323,220,581.55 and 129,386,945.70 is: 194,080,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,480,387.70 : 323,220,581.55 = 129,386,945.70 : x
  2. Step 2: Convert to fraction form
    215,480,387.70/323,220,581.55 = 129,386,945.70/x
  3. Step 3: Cross multiply
    215,480,387.70x = 323,220,581.55 × 129,386,945.70
  4. Step 4: Simplify right side
    215,480,387.70x = 41,820,523,834,132,272
  5. Step 5: Solve for x
    x = 41,820,523,834,132,272/215,480,387.70
  6. Step 6: Final answer
    x = 194,080,418.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.