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Finding the Fourth Proportional to 409,819.10, 614,728.65 and 357,331.10

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Solution

The fourth proportional to 409,819.10, 614,728.65 and 357,331.10 is: 535,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,819.10 : 614,728.65 = 357,331.10 : x
  2. Step 2: Convert to fraction form
    409,819.10/614,728.65 = 357,331.10/x
  3. Step 3: Cross multiply
    409,819.10x = 614,728.65 × 357,331.10
  4. Step 4: Simplify right side
    409,819.10x = 219,661,664,706.02
  5. Step 5: Solve for x
    x = 219,661,664,706.02/409,819.10
  6. Step 6: Final answer
    x = 535,996.65

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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.