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Finding the Fourth Proportional to 361,877.80, 542,816.70 and 325,136.20

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Solution

The fourth proportional to 361,877.80, 542,816.70 and 325,136.20 is: 487,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,877.80 : 542,816.70 = 325,136.20 : x
  2. Step 2: Convert to fraction form
    361,877.80/542,816.70 = 325,136.20/x
  3. Step 3: Cross multiply
    361,877.80x = 542,816.70 × 325,136.20
  4. Step 4: Simplify right side
    361,877.80x = 176,489,359,134.54
  5. Step 5: Solve for x
    x = 176,489,359,134.54/361,877.80
  6. Step 6: Final answer
    x = 487,704.30

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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.