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Finding the Fourth Proportional to 372,800, 559,204.32 and 92,319.68

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Solution

The fourth proportional to 372,800, 559,204.32 and 92,319.68 is: 138,480.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,800 : 559,204.32 = 92,319.68 : x
  2. Step 2: Convert to fraction form
    372,800/559,204.32 = 92,319.68/x
  3. Step 3: Cross multiply
    372,800x = 559,204.32 × 92,319.68
  4. Step 4: Simplify right side
    372,800x = 51,625,563,877.02
  5. Step 5: Solve for x
    x = 51,625,563,877.02/372,800
  6. Step 6: Final answer
    x = 138,480.59

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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.