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Finding the Fourth Proportional to 347,141.15, 520,711.74 and 147,321.42

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Solution

The fourth proportional to 347,141.15, 520,711.74 and 147,321.42 is: 220,982.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,141.15 : 520,711.74 = 147,321.42 : x
  2. Step 2: Convert to fraction form
    347,141.15/520,711.74 = 147,321.42/x
  3. Step 3: Cross multiply
    347,141.15x = 520,711.74 × 147,321.42
  4. Step 4: Simplify right side
    347,141.15x = 76,711,992,947.47
  5. Step 5: Solve for x
    x = 76,711,992,947.47/347,141.15
  6. Step 6: Final answer
    x = 220,982.14

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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.