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Finding the Fourth Proportional to 354,549.52, 531,668.64 and 132,778

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Solution

The fourth proportional to 354,549.52, 531,668.64 and 132,778 is: 199,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,549.52 : 531,668.64 = 132,778 : x
  2. Step 2: Convert to fraction form
    354,549.52/531,668.64 = 132,778/x
  3. Step 3: Cross multiply
    354,549.52x = 531,668.64 × 132,778
  4. Step 4: Simplify right side
    354,549.52x = 70,593,898,681.92
  5. Step 5: Solve for x
    x = 70,593,898,681.92/354,549.52
  6. Step 6: Final answer
    x = 199,108.71

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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.