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Finding the Fourth Proportional to 259,701.60, 389,475.60 and 101,839.20

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Solution

The fourth proportional to 259,701.60, 389,475.60 and 101,839.20 is: 152,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,701.60 : 389,475.60 = 101,839.20 : x
  2. Step 2: Convert to fraction form
    259,701.60/389,475.60 = 101,839.20/x
  3. Step 3: Cross multiply
    259,701.60x = 389,475.60 × 101,839.20
  4. Step 4: Simplify right side
    259,701.60x = 39,663,883,523.52
  5. Step 5: Solve for x
    x = 39,663,883,523.52/259,701.60
  6. Step 6: Final answer
    x = 152,728.68

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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.