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Finding the Fourth Proportional to 391,754.12, 540,732.79 and 230,702.59

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Solution

The fourth proportional to 391,754.12, 540,732.79 and 230,702.59 is: 318,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,754.12 : 540,732.79 = 230,702.59 : x
  2. Step 2: Convert to fraction form
    391,754.12/540,732.79 = 230,702.59/x
  3. Step 3: Cross multiply
    391,754.12x = 540,732.79 × 230,702.59
  4. Step 4: Simplify right side
    391,754.12x = 124,748,456,115.22
  5. Step 5: Solve for x
    x = 124,748,456,115.22/391,754.12
  6. Step 6: Final answer
    x = 318,435.60

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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.