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Finding the Fourth Proportional to 240,625.60, 360,868.32 and 72,139.20

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Solution

The fourth proportional to 240,625.60, 360,868.32 and 72,139.20 is: 108,187.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,625.60 : 360,868.32 = 72,139.20 : x
  2. Step 2: Convert to fraction form
    240,625.60/360,868.32 = 72,139.20/x
  3. Step 3: Cross multiply
    240,625.60x = 360,868.32 × 72,139.20
  4. Step 4: Simplify right side
    240,625.60x = 26,032,751,910.14
  5. Step 5: Solve for x
    x = 26,032,751,910.14/240,625.60
  6. Step 6: Final answer
    x = 108,187.79

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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.