Home / 402,680,123.20-603,572,287.20-221,057,646.40

Finding the Fourth Proportional to 402,680,123.20, 603,572,287.20 and 221,057,646.40

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Solution

The fourth proportional to 402,680,123.20, 603,572,287.20 and 221,057,646.40 is: 331,340,589.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,680,123.20 : 603,572,287.20 = 221,057,646.40 : x
  2. Step 2: Convert to fraction form
    402,680,123.20/603,572,287.20 = 221,057,646.40/x
  3. Step 3: Cross multiply
    402,680,123.20x = 603,572,287.20 × 221,057,646.40
  4. Step 4: Simplify right side
    402,680,123.20x = 133,424,269,240,696,864
  5. Step 5: Solve for x
    x = 133,424,269,240,696,864/402,680,123.20
  6. Step 6: Final answer
    x = 331,340,589.10

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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.