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Finding the Fourth Proportional to 454,014.40, 681,025.20 and 138,474.40

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Solution

The fourth proportional to 454,014.40, 681,025.20 and 138,474.40 is: 207,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,014.40 : 681,025.20 = 138,474.40 : x
  2. Step 2: Convert to fraction form
    454,014.40/681,025.20 = 138,474.40/x
  3. Step 3: Cross multiply
    454,014.40x = 681,025.20 × 138,474.40
  4. Step 4: Simplify right side
    454,014.40x = 94,304,555,954.88
  5. Step 5: Solve for x
    x = 94,304,555,954.88/454,014.40
  6. Step 6: Final answer
    x = 207,712.70

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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.