Home / 261,036.20-391,554.30-219,701.90

Finding the Fourth Proportional to 261,036.20, 391,554.30 and 219,701.90

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Solution

The fourth proportional to 261,036.20, 391,554.30 and 219,701.90 is: 329,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,036.20 : 391,554.30 = 219,701.90 : x
  2. Step 2: Convert to fraction form
    261,036.20/391,554.30 = 219,701.90/x
  3. Step 3: Cross multiply
    261,036.20x = 391,554.30 × 219,701.90
  4. Step 4: Simplify right side
    261,036.20x = 86,025,223,663.17
  5. Step 5: Solve for x
    x = 86,025,223,663.17/261,036.20
  6. Step 6: Final answer
    x = 329,552.85

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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.