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Finding the Fourth Proportional to 354,691.28, 489,458.76 and 193,542.32

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Solution

The fourth proportional to 354,691.28, 489,458.76 and 193,542.32 is: 267,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,691.28 : 489,458.76 = 193,542.32 : x
  2. Step 2: Convert to fraction form
    354,691.28/489,458.76 = 193,542.32/x
  3. Step 3: Cross multiply
    354,691.28x = 489,458.76 × 193,542.32
  4. Step 4: Simplify right side
    354,691.28x = 94,730,983,954.72
  5. Step 5: Solve for x
    x = 94,730,983,954.72/354,691.28
  6. Step 6: Final answer
    x = 267,080.10

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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.