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Finding the Fourth Proportional to 269,509.68, 371,841.84 and 156,310.56

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Solution

The fourth proportional to 269,509.68, 371,841.84 and 156,310.56 is: 215,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,509.68 : 371,841.84 = 156,310.56 : x
  2. Step 2: Convert to fraction form
    269,509.68/371,841.84 = 156,310.56/x
  3. Step 3: Cross multiply
    269,509.68x = 371,841.84 × 156,310.56
  4. Step 4: Simplify right side
    269,509.68x = 58,122,806,241.83
  5. Step 5: Solve for x
    x = 58,122,806,241.83/269,509.68
  6. Step 6: Final answer
    x = 215,661.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.