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Finding the Fourth Proportional to 390,917.48, 586,551.18 and 224,705.48

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Solution

The fourth proportional to 390,917.48, 586,551.18 and 224,705.48 is: 337,158.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,917.48 : 586,551.18 = 224,705.48 : x
  2. Step 2: Convert to fraction form
    390,917.48/586,551.18 = 224,705.48/x
  3. Step 3: Cross multiply
    390,917.48x = 586,551.18 × 224,705.48
  4. Step 4: Simplify right side
    390,917.48x = 131,801,264,446.47
  5. Step 5: Solve for x
    x = 131,801,264,446.47/390,917.48
  6. Step 6: Final answer
    x = 337,158.79

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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.