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Finding the Fourth Proportional to 347,205.65, 520,717.34 and 147,423.20

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Solution

The fourth proportional to 347,205.65, 520,717.34 and 147,423.20 is: 221,096.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,205.65 : 520,717.34 = 147,423.20 : x
  2. Step 2: Convert to fraction form
    347,205.65/520,717.34 = 147,423.20/x
  3. Step 3: Cross multiply
    347,205.65x = 520,717.34 × 147,423.20
  4. Step 4: Simplify right side
    347,205.65x = 76,765,813,217.59
  5. Step 5: Solve for x
    x = 76,765,813,217.59/347,205.65
  6. Step 6: Final answer
    x = 221,096.10

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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.