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Finding the Fourth Proportional to 316,711.60, 475,067.40 and 80,054.28

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Solution

The fourth proportional to 316,711.60, 475,067.40 and 80,054.28 is: 120,081.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,711.60 : 475,067.40 = 80,054.28 : x
  2. Step 2: Convert to fraction form
    316,711.60/475,067.40 = 80,054.28/x
  3. Step 3: Cross multiply
    316,711.60x = 475,067.40 × 80,054.28
  4. Step 4: Simplify right side
    316,711.60x = 38,031,178,658.47
  5. Step 5: Solve for x
    x = 38,031,178,658.47/316,711.60
  6. Step 6: Final answer
    x = 120,081.42

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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.