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Finding the Fourth Proportional to 412,930.20, 569,240.52 and 291,857.88

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Solution

The fourth proportional to 412,930.20, 569,240.52 and 291,857.88 is: 402,337.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,930.20 : 569,240.52 = 291,857.88 : x
  2. Step 2: Convert to fraction form
    412,930.20/569,240.52 = 291,857.88/x
  3. Step 3: Cross multiply
    412,930.20x = 569,240.52 × 291,857.88
  4. Step 4: Simplify right side
    412,930.20x = 166,137,331,377.30
  5. Step 5: Solve for x
    x = 166,137,331,377.30/412,930.20
  6. Step 6: Final answer
    x = 402,337.57

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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.