Home / 261,238.91-391,480.11-180,102.65

Finding the Fourth Proportional to 261,238.91, 391,480.11 and 180,102.65

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Solution

The fourth proportional to 261,238.91, 391,480.11 and 180,102.65 is: 269,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,238.91 : 391,480.11 = 180,102.65 : x
  2. Step 2: Convert to fraction form
    261,238.91/391,480.11 = 180,102.65/x
  3. Step 3: Cross multiply
    261,238.91x = 391,480.11 × 180,102.65
  4. Step 4: Simplify right side
    261,238.91x = 70,506,603,275.89
  5. Step 5: Solve for x
    x = 70,506,603,275.89/261,238.91
  6. Step 6: Final answer
    x = 269,893.20

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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.