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Finding the Fourth Proportional to 187,798.28, 281,697.34 and 45,642.80

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Solution

The fourth proportional to 187,798.28, 281,697.34 and 45,642.80 is: 68,464.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,798.28 : 281,697.34 = 45,642.80 : x
  2. Step 2: Convert to fraction form
    187,798.28/281,697.34 = 45,642.80/x
  3. Step 3: Cross multiply
    187,798.28x = 281,697.34 × 45,642.80
  4. Step 4: Simplify right side
    187,798.28x = 12,857,455,350.15
  5. Step 5: Solve for x
    x = 12,857,455,350.15/187,798.28
  6. Step 6: Final answer
    x = 68,464.18

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1.5x scale

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.