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Finding the Fourth Proportional to 268,405.92, 370,400.04 and 147,555

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Solution

The fourth proportional to 268,405.92, 370,400.04 and 147,555 is: 203,625.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,405.92 : 370,400.04 = 147,555 : x
  2. Step 2: Convert to fraction form
    268,405.92/370,400.04 = 147,555/x
  3. Step 3: Cross multiply
    268,405.92x = 370,400.04 × 147,555
  4. Step 4: Simplify right side
    268,405.92x = 54,654,377,902.20
  5. Step 5: Solve for x
    x = 54,654,377,902.20/268,405.92
  6. Step 6: Final answer
    x = 203,625.83

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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.