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Finding the Fourth Proportional to 312,479.58, 468,890 and 132,537.01

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Solution

The fourth proportional to 312,479.58, 468,890 and 132,537.01 is: 198,877.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,479.58 : 468,890 = 132,537.01 : x
  2. Step 2: Convert to fraction form
    312,479.58/468,890 = 132,537.01/x
  3. Step 3: Cross multiply
    312,479.58x = 468,890 × 132,537.01
  4. Step 4: Simplify right side
    312,479.58x = 62,145,278,618.90
  5. Step 5: Solve for x
    x = 62,145,278,618.90/312,479.58
  6. Step 6: Final answer
    x = 198,877.89

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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.