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Finding the Fourth Proportional to 317,386.71, 476,083.23 and 80,729.43

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Solution

The fourth proportional to 317,386.71, 476,083.23 and 80,729.43 is: 121,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,386.71 : 476,083.23 = 80,729.43 : x
  2. Step 2: Convert to fraction form
    317,386.71/476,083.23 = 80,729.43/x
  3. Step 3: Cross multiply
    317,386.71x = 476,083.23 × 80,729.43
  4. Step 4: Simplify right side
    317,386.71x = 38,433,927,790.46
  5. Step 5: Solve for x
    x = 38,433,927,790.46/317,386.71
  6. Step 6: Final answer
    x = 121,094.95

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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.