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Finding the Fourth Proportional to 658,172.25, 908,277.71 and 356,366.25

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Solution

The fourth proportional to 658,172.25, 908,277.71 and 356,366.25 is: 491,785.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,172.25 : 908,277.71 = 356,366.25 : x
  2. Step 2: Convert to fraction form
    658,172.25/908,277.71 = 356,366.25/x
  3. Step 3: Cross multiply
    658,172.25x = 908,277.71 × 356,366.25
  4. Step 4: Simplify right side
    658,172.25x = 323,679,519,689.46
  5. Step 5: Solve for x
    x = 323,679,519,689.46/658,172.25
  6. Step 6: Final answer
    x = 491,785.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.