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Finding the Fourth Proportional to 482,076.12, 722,822.52 and 215,787

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Solution

The fourth proportional to 482,076.12, 722,822.52 and 215,787 is: 323,549.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,076.12 : 722,822.52 = 215,787 : x
  2. Step 2: Convert to fraction form
    482,076.12/722,822.52 = 215,787/x
  3. Step 3: Cross multiply
    482,076.12x = 722,822.52 × 215,787
  4. Step 4: Simplify right side
    482,076.12x = 155,975,703,123.24
  5. Step 5: Solve for x
    x = 155,975,703,123.24/482,076.12
  6. Step 6: Final answer
    x = 323,549.95

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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.