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Finding the Fourth Proportional to 261,247.93, 391,937.51 and 74,259.43

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Solution

The fourth proportional to 261,247.93, 391,937.51 and 74,259.43 is: 111,407.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,247.93 : 391,937.51 = 74,259.43 : x
  2. Step 2: Convert to fraction form
    261,247.93/391,937.51 = 74,259.43/x
  3. Step 3: Cross multiply
    261,247.93x = 391,937.51 × 74,259.43
  4. Step 4: Simplify right side
    261,247.93x = 29,105,055,294.02
  5. Step 5: Solve for x
    x = 29,105,055,294.02/261,247.93
  6. Step 6: Final answer
    x = 111,407.79

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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.