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Finding the Fourth Proportional to 355,939.80, 533,909.70 and 187,229.40

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Solution

The fourth proportional to 355,939.80, 533,909.70 and 187,229.40 is: 280,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,939.80 : 533,909.70 = 187,229.40 : x
  2. Step 2: Convert to fraction form
    355,939.80/533,909.70 = 187,229.40/x
  3. Step 3: Cross multiply
    355,939.80x = 533,909.70 × 187,229.40
  4. Step 4: Simplify right side
    355,939.80x = 99,963,592,785.18
  5. Step 5: Solve for x
    x = 99,963,592,785.18/355,939.80
  6. Step 6: Final answer
    x = 280,844.10

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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.