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Finding the Fourth Proportional to 503,689.47, 755,534.21 and 166,639.62

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Solution

The fourth proportional to 503,689.47, 755,534.21 and 166,639.62 is: 249,959.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,689.47 : 755,534.21 = 166,639.62 : x
  2. Step 2: Convert to fraction form
    503,689.47/755,534.21 = 166,639.62/x
  3. Step 3: Cross multiply
    503,689.47x = 755,534.21 × 166,639.62
  4. Step 4: Simplify right side
    503,689.47x = 125,901,932,818.20
  5. Step 5: Solve for x
    x = 125,901,932,818.20/503,689.47
  6. Step 6: Final answer
    x = 249,959.43

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Similar ratio
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1.5x scale

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.