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Finding the Fourth Proportional to 155,305.60, 232,843.20 and 66,486.40

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Solution

The fourth proportional to 155,305.60, 232,843.20 and 66,486.40 is: 99,680.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,305.60 : 232,843.20 = 66,486.40 : x
  2. Step 2: Convert to fraction form
    155,305.60/232,843.20 = 66,486.40/x
  3. Step 3: Cross multiply
    155,305.60x = 232,843.20 × 66,486.40
  4. Step 4: Simplify right side
    155,305.60x = 15,480,906,132.48
  5. Step 5: Solve for x
    x = 15,480,906,132.48/155,305.60
  6. Step 6: Final answer
    x = 99,680.28

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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.