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Finding the Fourth Proportional to 316,987.22, 475,686.98 and 137,248.18

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Solution

The fourth proportional to 316,987.22, 475,686.98 and 137,248.18 is: 205,961.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,987.22 : 475,686.98 = 137,248.18 : x
  2. Step 2: Convert to fraction form
    316,987.22/475,686.98 = 137,248.18/x
  3. Step 3: Cross multiply
    316,987.22x = 475,686.98 × 137,248.18
  4. Step 4: Simplify right side
    316,987.22x = 65,287,169,940.41
  5. Step 5: Solve for x
    x = 65,287,169,940.41/316,987.22
  6. Step 6: Final answer
    x = 205,961.52

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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.