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Finding the Fourth Proportional to 472,906.60, 709,359.90 and 192,279.40

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Solution

The fourth proportional to 472,906.60, 709,359.90 and 192,279.40 is: 288,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,906.60 : 709,359.90 = 192,279.40 : x
  2. Step 2: Convert to fraction form
    472,906.60/709,359.90 = 192,279.40/x
  3. Step 3: Cross multiply
    472,906.60x = 709,359.90 × 192,279.40
  4. Step 4: Simplify right side
    472,906.60x = 136,395,295,956.06
  5. Step 5: Solve for x
    x = 136,395,295,956.06/472,906.60
  6. Step 6: Final answer
    x = 288,419.10

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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.