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Finding the Fourth Proportional to 424,889.24, 636,416.44 and 199,912.55

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Solution

The fourth proportional to 424,889.24, 636,416.44 and 199,912.55 is: 299,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,889.24 : 636,416.44 = 199,912.55 : x
  2. Step 2: Convert to fraction form
    424,889.24/636,416.44 = 199,912.55/x
  3. Step 3: Cross multiply
    424,889.24x = 636,416.44 × 199,912.55
  4. Step 4: Simplify right side
    424,889.24x = 127,227,633,382.32
  5. Step 5: Solve for x
    x = 127,227,633,382.32/424,889.24
  6. Step 6: Final answer
    x = 299,437.17

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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.