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Finding the Fourth Proportional to 412,272.78, 618,400.35 and 112,753.35

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Solution

The fourth proportional to 412,272.78, 618,400.35 and 112,753.35 is: 169,127.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,272.78 : 618,400.35 = 112,753.35 : x
  2. Step 2: Convert to fraction form
    412,272.78/618,400.35 = 112,753.35/x
  3. Step 3: Cross multiply
    412,272.78x = 618,400.35 × 112,753.35
  4. Step 4: Simplify right side
    412,272.78x = 69,726,710,539.91
  5. Step 5: Solve for x
    x = 69,726,710,539.91/412,272.78
  6. Step 6: Final answer
    x = 169,127.61

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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.