Home / 261,029.10-391,215.60-127,622.10

Finding the Fourth Proportional to 261,029.10, 391,215.60 and 127,622.10

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Solution

The fourth proportional to 261,029.10, 391,215.60 and 127,622.10 is: 191,272.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,029.10 : 391,215.60 = 127,622.10 : x
  2. Step 2: Convert to fraction form
    261,029.10/391,215.60 = 127,622.10/x
  3. Step 3: Cross multiply
    261,029.10x = 391,215.60 × 127,622.10
  4. Step 4: Simplify right side
    261,029.10x = 49,927,756,424.76
  5. Step 5: Solve for x
    x = 49,927,756,424.76/261,029.10
  6. Step 6: Final answer
    x = 191,272.76

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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.