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Finding the Fourth Proportional to 316,778.38, 475,127.95 and 103,528.46

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Solution

The fourth proportional to 316,778.38, 475,127.95 and 103,528.46 is: 155,279.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,778.38 : 475,127.95 = 103,528.46 : x
  2. Step 2: Convert to fraction form
    316,778.38/475,127.95 = 103,528.46/x
  3. Step 3: Cross multiply
    316,778.38x = 475,127.95 × 103,528.46
  4. Step 4: Simplify right side
    316,778.38x = 49,189,262,332.00
  5. Step 5: Solve for x
    x = 49,189,262,332.00/316,778.38
  6. Step 6: Final answer
    x = 155,279.73

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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.