Home / 261,186.92-391,829.55-186,120.84

Finding the Fourth Proportional to 261,186.92, 391,829.55 and 186,120.84

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Solution

The fourth proportional to 261,186.92, 391,829.55 and 186,120.84 is: 279,216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,186.92 : 391,829.55 = 186,120.84 : x
  2. Step 2: Convert to fraction form
    261,186.92/391,829.55 = 186,120.84/x
  3. Step 3: Cross multiply
    261,186.92x = 391,829.55 × 186,120.84
  4. Step 4: Simplify right side
    261,186.92x = 72,927,644,982.82
  5. Step 5: Solve for x
    x = 72,927,644,982.82/261,186.92
  6. Step 6: Final answer
    x = 279,216.30

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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.