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Finding the Fourth Proportional to 381,727.80, 572,591.70 and 349,068.60

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Solution

The fourth proportional to 381,727.80, 572,591.70 and 349,068.60 is: 523,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,727.80 : 572,591.70 = 349,068.60 : x
  2. Step 2: Convert to fraction form
    381,727.80/572,591.70 = 349,068.60/x
  3. Step 3: Cross multiply
    381,727.80x = 572,591.70 × 349,068.60
  4. Step 4: Simplify right side
    381,727.80x = 199,873,783,090.62
  5. Step 5: Solve for x
    x = 199,873,783,090.62/381,727.80
  6. Step 6: Final answer
    x = 523,602.90

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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.