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Finding the Fourth Proportional to 243,755.60, 365,633.40 and 85,963.55

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Solution

The fourth proportional to 243,755.60, 365,633.40 and 85,963.55 is: 128,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,755.60 : 365,633.40 = 85,963.55 : x
  2. Step 2: Convert to fraction form
    243,755.60/365,633.40 = 85,963.55/x
  3. Step 3: Cross multiply
    243,755.60x = 365,633.40 × 85,963.55
  4. Step 4: Simplify right side
    243,755.60x = 31,431,145,062.57
  5. Step 5: Solve for x
    x = 31,431,145,062.57/243,755.60
  6. Step 6: Final answer
    x = 128,945.33

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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.