Home / 276,299.38-381,277.56-155,445.76

Finding the Fourth Proportional to 276,299.38, 381,277.56 and 155,445.76

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Solution

The fourth proportional to 276,299.38, 381,277.56 and 155,445.76 is: 214,506.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,299.38 : 381,277.56 = 155,445.76 : x
  2. Step 2: Convert to fraction form
    276,299.38/381,277.56 = 155,445.76/x
  3. Step 3: Cross multiply
    276,299.38x = 381,277.56 × 155,445.76
  4. Step 4: Simplify right side
    276,299.38x = 59,267,980,085.15
  5. Step 5: Solve for x
    x = 59,267,980,085.15/276,299.38
  6. Step 6: Final answer
    x = 214,506.38

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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.