Home / 261,008.20-391,512.30-245,456.20

Finding the Fourth Proportional to 261,008.20, 391,512.30 and 245,456.20

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Solution

The fourth proportional to 261,008.20, 391,512.30 and 245,456.20 is: 368,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,008.20 : 391,512.30 = 245,456.20 : x
  2. Step 2: Convert to fraction form
    261,008.20/391,512.30 = 245,456.20/x
  3. Step 3: Cross multiply
    261,008.20x = 391,512.30 × 245,456.20
  4. Step 4: Simplify right side
    261,008.20x = 96,099,121,411.26
  5. Step 5: Solve for x
    x = 96,099,121,411.26/261,008.20
  6. Step 6: Final answer
    x = 368,184.30

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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.