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Finding the Fourth Proportional to 353,140.88, 529,711.31 and 90,484.88

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Solution

The fourth proportional to 353,140.88, 529,711.31 and 90,484.88 is: 135,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,140.88 : 529,711.31 = 90,484.88 : x
  2. Step 2: Convert to fraction form
    353,140.88/529,711.31 = 90,484.88/x
  3. Step 3: Cross multiply
    353,140.88x = 529,711.31 × 90,484.88
  4. Step 4: Simplify right side
    353,140.88x = 47,930,861,897.65
  5. Step 5: Solve for x
    x = 47,930,861,897.65/353,140.88
  6. Step 6: Final answer
    x = 135,727.31

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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.