Home / 221,912,404.07-306,164,948.85-129,073,204.31

Finding the Fourth Proportional to 221,912,404.07, 306,164,948.85 and 129,073,204.31

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Solution

The fourth proportional to 221,912,404.07, 306,164,948.85 and 129,073,204.31 is: 178,077,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,912,404.07 : 306,164,948.85 = 129,073,204.31 : x
  2. Step 2: Convert to fraction form
    221,912,404.07/306,164,948.85 = 129,073,204.31/x
  3. Step 3: Cross multiply
    221,912,404.07x = 306,164,948.85 × 129,073,204.31
  4. Step 4: Simplify right side
    221,912,404.07x = 39,517,690,993,945,928
  5. Step 5: Solve for x
    x = 39,517,690,993,945,928/221,912,404.07
  6. Step 6: Final answer
    x = 178,077,882.40

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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.