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Finding the Fourth Proportional to 347,410.20, 521,115.30 and 147,737.10

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Solution

The fourth proportional to 347,410.20, 521,115.30 and 147,737.10 is: 221,605.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,410.20 : 521,115.30 = 147,737.10 : x
  2. Step 2: Convert to fraction form
    347,410.20/521,115.30 = 147,737.10/x
  3. Step 3: Cross multiply
    347,410.20x = 521,115.30 × 147,737.10
  4. Step 4: Simplify right side
    347,410.20x = 76,988,063,187.63
  5. Step 5: Solve for x
    x = 76,988,063,187.63/347,410.20
  6. Step 6: Final answer
    x = 221,605.65

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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.