Home / 276,359.20-381,374.98-155,500.72

Finding the Fourth Proportional to 276,359.20, 381,374.98 and 155,500.72

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Solution

The fourth proportional to 276,359.20, 381,374.98 and 155,500.72 is: 214,590.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,359.20 : 381,374.98 = 155,500.72 : x
  2. Step 2: Convert to fraction form
    276,359.20/381,374.98 = 155,500.72/x
  3. Step 3: Cross multiply
    276,359.20x = 381,374.98 × 155,500.72
  4. Step 4: Simplify right side
    276,359.20x = 59,304,083,979.99
  5. Step 5: Solve for x
    x = 59,304,083,979.99/276,359.20
  6. Step 6: Final answer
    x = 214,590.59

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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.