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Finding the Fourth Proportional to 261,084.87, 391,630.95 and 74,096.37

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Solution

The fourth proportional to 261,084.87, 391,630.95 and 74,096.37 is: 111,145.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,084.87 : 391,630.95 = 74,096.37 : x
  2. Step 2: Convert to fraction form
    261,084.87/391,630.95 = 74,096.37/x
  3. Step 3: Cross multiply
    261,084.87x = 391,630.95 × 74,096.37
  4. Step 4: Simplify right side
    261,084.87x = 29,018,431,774.65
  5. Step 5: Solve for x
    x = 29,018,431,774.65/261,084.87
  6. Step 6: Final answer
    x = 111,145.59

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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.