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Finding the Fourth Proportional to 240,617.67, 361,580.79 and 128,377.19

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Solution

The fourth proportional to 240,617.67, 361,580.79 and 128,377.19 is: 192,914.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,617.67 : 361,580.79 = 128,377.19 : x
  2. Step 2: Convert to fraction form
    240,617.67/361,580.79 = 128,377.19/x
  3. Step 3: Cross multiply
    240,617.67x = 361,580.79 × 128,377.19
  4. Step 4: Simplify right side
    240,617.67x = 46,418,723,970.28
  5. Step 5: Solve for x
    x = 46,418,723,970.28/240,617.67
  6. Step 6: Final answer
    x = 192,914.86

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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.