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Finding the Fourth Proportional to 231,246.40, 347,279.20 and 168,987.20

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Solution

The fourth proportional to 231,246.40, 347,279.20 and 168,987.20 is: 253,780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,246.40 : 347,279.20 = 168,987.20 : x
  2. Step 2: Convert to fraction form
    231,246.40/347,279.20 = 168,987.20/x
  3. Step 3: Cross multiply
    231,246.40x = 347,279.20 × 168,987.20
  4. Step 4: Simplify right side
    231,246.40x = 58,685,739,626.24
  5. Step 5: Solve for x
    x = 58,685,739,626.24/231,246.40
  6. Step 6: Final answer
    x = 253,780.12

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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.