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Finding the Fourth Proportional to 259,937.60, 389,920.08 and 72,963.68

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Solution

The fourth proportional to 259,937.60, 389,920.08 and 72,963.68 is: 109,449.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,937.60 : 389,920.08 = 72,963.68 : x
  2. Step 2: Convert to fraction form
    259,937.60/389,920.08 = 72,963.68/x
  3. Step 3: Cross multiply
    259,937.60x = 389,920.08 × 72,963.68
  4. Step 4: Simplify right side
    259,937.60x = 28,450,003,942.69
  5. Step 5: Solve for x
    x = 28,450,003,942.69/259,937.60
  6. Step 6: Final answer
    x = 109,449.36

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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.