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Finding the Fourth Proportional to 445,081, 614,211.78 and 243,872.68

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Solution

The fourth proportional to 445,081, 614,211.78 and 243,872.68 is: 336,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,081 : 614,211.78 = 243,872.68 : x
  2. Step 2: Convert to fraction form
    445,081/614,211.78 = 243,872.68/x
  3. Step 3: Cross multiply
    445,081x = 614,211.78 × 243,872.68
  4. Step 4: Simplify right side
    445,081x = 149,789,472,876.17
  5. Step 5: Solve for x
    x = 149,789,472,876.17/445,081
  6. Step 6: Final answer
    x = 336,544.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.