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Finding the Fourth Proportional to 261,393.60, 391,853.28 and 95,064

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Solution

The fourth proportional to 261,393.60, 391,853.28 and 95,064 is: 142,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,393.60 : 391,853.28 = 95,064 : x
  2. Step 2: Convert to fraction form
    261,393.60/391,853.28 = 95,064/x
  3. Step 3: Cross multiply
    261,393.60x = 391,853.28 × 95,064
  4. Step 4: Simplify right side
    261,393.60x = 37,251,140,209.92
  5. Step 5: Solve for x
    x = 37,251,140,209.92/261,393.60
  6. Step 6: Final answer
    x = 142,509.76

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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.