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Finding the Fourth Proportional to 472,539.72, 652,120.56 and 257,691.54

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Solution

The fourth proportional to 472,539.72, 652,120.56 and 257,691.54 is: 355,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,539.72 : 652,120.56 = 257,691.54 : x
  2. Step 2: Convert to fraction form
    472,539.72/652,120.56 = 257,691.54/x
  3. Step 3: Cross multiply
    472,539.72x = 652,120.56 × 257,691.54
  4. Step 4: Simplify right side
    472,539.72x = 168,045,951,372.06
  5. Step 5: Solve for x
    x = 168,045,951,372.06/472,539.72
  6. Step 6: Final answer
    x = 355,622.91

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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.