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Finding the Fourth Proportional to 392,607.96, 588,915.01 and 215,018.10

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Solution

The fourth proportional to 392,607.96, 588,915.01 and 215,018.10 is: 322,528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,607.96 : 588,915.01 = 215,018.10 : x
  2. Step 2: Convert to fraction form
    392,607.96/588,915.01 = 215,018.10/x
  3. Step 3: Cross multiply
    392,607.96x = 588,915.01 × 215,018.10
  4. Step 4: Simplify right side
    392,607.96x = 126,627,383,567.11
  5. Step 5: Solve for x
    x = 126,627,383,567.11/392,607.96
  6. Step 6: Final answer
    x = 322,528.82

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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.