Home / 276,820.39-382,010.41-156,000.45

Finding the Fourth Proportional to 276,820.39, 382,010.41 and 156,000.45

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Solution

The fourth proportional to 276,820.39, 382,010.41 and 156,000.45 is: 215,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,820.39 : 382,010.41 = 156,000.45 : x
  2. Step 2: Convert to fraction form
    276,820.39/382,010.41 = 156,000.45/x
  3. Step 3: Cross multiply
    276,820.39x = 382,010.41 × 156,000.45
  4. Step 4: Simplify right side
    276,820.39x = 59,593,795,864.68
  5. Step 5: Solve for x
    x = 59,593,795,864.68/276,820.39
  6. Step 6: Final answer
    x = 215,279.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.