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Finding the Fourth Proportional to 461,348.70, 692,023.05 and 128,924.70

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Solution

The fourth proportional to 461,348.70, 692,023.05 and 128,924.70 is: 193,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,348.70 : 692,023.05 = 128,924.70 : x
  2. Step 2: Convert to fraction form
    461,348.70/692,023.05 = 128,924.70/x
  3. Step 3: Cross multiply
    461,348.70x = 692,023.05 × 128,924.70
  4. Step 4: Simplify right side
    461,348.70x = 89,218,864,114.34
  5. Step 5: Solve for x
    x = 89,218,864,114.34/461,348.70
  6. Step 6: Final answer
    x = 193,387.05

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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.