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Finding the Fourth Proportional to 147,608.92, 221,446.19 and 42,419.69

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Solution

The fourth proportional to 147,608.92, 221,446.19 and 42,419.69 is: 63,638.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,608.92 : 221,446.19 = 42,419.69 : x
  2. Step 2: Convert to fraction form
    147,608.92/221,446.19 = 42,419.69/x
  3. Step 3: Cross multiply
    147,608.92x = 221,446.19 × 42,419.69
  4. Step 4: Simplify right side
    147,608.92x = 9,393,678,731.48
  5. Step 5: Solve for x
    x = 9,393,678,731.48/147,608.92
  6. Step 6: Final answer
    x = 63,638.96

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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.