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Finding the Fourth Proportional to 391,732.80, 586,918.80 and 180,938.40

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Solution

The fourth proportional to 391,732.80, 586,918.80 and 180,938.40 is: 271,093.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,732.80 : 586,918.80 = 180,938.40 : x
  2. Step 2: Convert to fraction form
    391,732.80/586,918.80 = 180,938.40/x
  3. Step 3: Cross multiply
    391,732.80x = 586,918.80 × 180,938.40
  4. Step 4: Simplify right side
    391,732.80x = 106,196,148,601.92
  5. Step 5: Solve for x
    x = 106,196,148,601.92/391,732.80
  6. Step 6: Final answer
    x = 271,093.33

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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.