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Finding the Fourth Proportional to 454,292.70, 681,471.45 and 138,749.10

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Solution

The fourth proportional to 454,292.70, 681,471.45 and 138,749.10 is: 208,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,292.70 : 681,471.45 = 138,749.10 : x
  2. Step 2: Convert to fraction form
    454,292.70/681,471.45 = 138,749.10/x
  3. Step 3: Cross multiply
    454,292.70x = 681,471.45 × 138,749.10
  4. Step 4: Simplify right side
    454,292.70x = 94,553,550,363.20
  5. Step 5: Solve for x
    x = 94,553,550,363.20/454,292.70
  6. Step 6: Final answer
    x = 208,133.55

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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.