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Finding the Fourth Proportional to 400,459.40, 600,359.82 and 187,121.79

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Solution

The fourth proportional to 400,459.40, 600,359.82 and 187,121.79 is: 280,528.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,459.40 : 600,359.82 = 187,121.79 : x
  2. Step 2: Convert to fraction form
    400,459.40/600,359.82 = 187,121.79/x
  3. Step 3: Cross multiply
    400,459.40x = 600,359.82 × 187,121.79
  4. Step 4: Simplify right side
    400,459.40x = 112,340,404,162.48
  5. Step 5: Solve for x
    x = 112,340,404,162.48/400,459.40
  6. Step 6: Final answer
    x = 280,528.83

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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.