Home / 261,149.06-391,723.74-172,381.84

Finding the Fourth Proportional to 261,149.06, 391,723.74 and 172,381.84

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Solution

The fourth proportional to 261,149.06, 391,723.74 and 172,381.84 is: 258,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,149.06 : 391,723.74 = 172,381.84 : x
  2. Step 2: Convert to fraction form
    261,149.06/391,723.74 = 172,381.84/x
  3. Step 3: Cross multiply
    261,149.06x = 391,723.74 × 172,381.84
  4. Step 4: Simplify right side
    261,149.06x = 67,526,058,093.57
  5. Step 5: Solve for x
    x = 67,526,058,093.57/261,149.06
  6. Step 6: Final answer
    x = 258,572.85

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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.