Home / 276,788.22-381,888.72-155,887.22

Finding the Fourth Proportional to 276,788.22, 381,888.72 and 155,887.22

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Solution

The fourth proportional to 276,788.22, 381,888.72 and 155,887.22 is: 215,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,788.22 : 381,888.72 = 155,887.22 : x
  2. Step 2: Convert to fraction form
    276,788.22/381,888.72 = 155,887.22/x
  3. Step 3: Cross multiply
    276,788.22x = 381,888.72 × 155,887.22
  4. Step 4: Simplify right side
    276,788.22x = 59,531,569,000.71
  5. Step 5: Solve for x
    x = 59,531,569,000.71/276,788.22
  6. Step 6: Final answer
    x = 215,079.85

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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.