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Finding the Fourth Proportional to 343,882.98, 515,838.42 and 87,722.28

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Solution

The fourth proportional to 343,882.98, 515,838.42 and 87,722.28 is: 131,586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,882.98 : 515,838.42 = 87,722.28 : x
  2. Step 2: Convert to fraction form
    343,882.98/515,838.42 = 87,722.28/x
  3. Step 3: Cross multiply
    343,882.98x = 515,838.42 × 87,722.28
  4. Step 4: Simplify right side
    343,882.98x = 45,250,522,314.00
  5. Step 5: Solve for x
    x = 45,250,522,314.00/343,882.98
  6. Step 6: Final answer
    x = 131,586.98

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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.