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Finding the Fourth Proportional to 261,230.57, 391,850.71 and 74,246.93

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Solution

The fourth proportional to 261,230.57, 391,850.71 and 74,246.93 is: 111,371.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,230.57 : 391,850.71 = 74,246.93 : x
  2. Step 2: Convert to fraction form
    261,230.57/391,850.71 = 74,246.93/x
  3. Step 3: Cross multiply
    261,230.57x = 391,850.71 × 74,246.93
  4. Step 4: Simplify right side
    261,230.57x = 29,093,709,905.33
  5. Step 5: Solve for x
    x = 29,093,709,905.33/261,230.57
  6. Step 6: Final answer
    x = 111,371.77

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1.5x scale

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.