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Finding the Fourth Proportional to 317,681.73, 476,538.93 and 81,026.46

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Solution

The fourth proportional to 317,681.73, 476,538.93 and 81,026.46 is: 121,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,681.73 : 476,538.93 = 81,026.46 : x
  2. Step 2: Convert to fraction form
    317,681.73/476,538.93 = 81,026.46/x
  3. Step 3: Cross multiply
    317,681.73x = 476,538.93 × 81,026.46
  4. Step 4: Simplify right side
    317,681.73x = 38,612,262,550.09
  5. Step 5: Solve for x
    x = 38,612,262,550.09/317,681.73
  6. Step 6: Final answer
    x = 121,543.86

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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.