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Finding the Fourth Proportional to 348,520.80, 522,781.20 and 269,691.60

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Solution

The fourth proportional to 348,520.80, 522,781.20 and 269,691.60 is: 404,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,520.80 : 522,781.20 = 269,691.60 : x
  2. Step 2: Convert to fraction form
    348,520.80/522,781.20 = 269,691.60/x
  3. Step 3: Cross multiply
    348,520.80x = 522,781.20 × 269,691.60
  4. Step 4: Simplify right side
    348,520.80x = 140,989,698,277.92
  5. Step 5: Solve for x
    x = 140,989,698,277.92/348,520.80
  6. Step 6: Final answer
    x = 404,537.40

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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.