Home / 402,680,105.20-603,572,260.20-221,057,628.40

Finding the Fourth Proportional to 402,680,105.20, 603,572,260.20 and 221,057,628.40

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Solution

The fourth proportional to 402,680,105.20, 603,572,260.20 and 221,057,628.40 is: 331,340,562.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,680,105.20 : 603,572,260.20 = 221,057,628.40 : x
  2. Step 2: Convert to fraction form
    402,680,105.20/603,572,260.20 = 221,057,628.40/x
  3. Step 3: Cross multiply
    402,680,105.20x = 603,572,260.20 × 221,057,628.40
  4. Step 4: Simplify right side
    402,680,105.20x = 133,424,252,407,839,728
  5. Step 5: Solve for x
    x = 133,424,252,407,839,728/402,680,105.20
  6. Step 6: Final answer
    x = 331,340,562.11

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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.