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Finding the Fourth Proportional to 316,911.65, 475,267.12 and 103,630.29

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Solution

The fourth proportional to 316,911.65, 475,267.12 and 103,630.29 is: 155,412.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,911.65 : 475,267.12 = 103,630.29 : x
  2. Step 2: Convert to fraction form
    316,911.65/475,267.12 = 103,630.29/x
  3. Step 3: Cross multiply
    316,911.65x = 475,267.12 × 103,630.29
  4. Step 4: Simplify right side
    316,911.65x = 49,252,067,723.20
  5. Step 5: Solve for x
    x = 49,252,067,723.20/316,911.65
  6. Step 6: Final answer
    x = 155,412.61

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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.