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Finding the Fourth Proportional to 209,927.84, 315,013.69 and 88,339.41

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Solution

The fourth proportional to 209,927.84, 315,013.69 and 88,339.41 is: 132,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,927.84 : 315,013.69 = 88,339.41 : x
  2. Step 2: Convert to fraction form
    209,927.84/315,013.69 = 88,339.41/x
  3. Step 3: Cross multiply
    209,927.84x = 315,013.69 × 88,339.41
  4. Step 4: Simplify right side
    209,927.84x = 27,828,123,516.52
  5. Step 5: Solve for x
    x = 27,828,123,516.52/209,927.84
  6. Step 6: Final answer
    x = 132,560.42

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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.