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Finding the Fourth Proportional to 453,072.60, 679,706.10 and 137,561.40

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Solution

The fourth proportional to 453,072.60, 679,706.10 and 137,561.40 is: 206,371.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,072.60 : 679,706.10 = 137,561.40 : x
  2. Step 2: Convert to fraction form
    453,072.60/679,706.10 = 137,561.40/x
  3. Step 3: Cross multiply
    453,072.60x = 679,706.10 × 137,561.40
  4. Step 4: Simplify right side
    453,072.60x = 93,501,322,704.54
  5. Step 5: Solve for x
    x = 93,501,322,704.54/453,072.60
  6. Step 6: Final answer
    x = 206,371.61

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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.