Home / 276,123.20-381,042.45-155,261.39

Finding the Fourth Proportional to 276,123.20, 381,042.45 and 155,261.39

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Solution

The fourth proportional to 276,123.20, 381,042.45 and 155,261.39 is: 214,256.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,123.20 : 381,042.45 = 155,261.39 : x
  2. Step 2: Convert to fraction form
    276,123.20/381,042.45 = 155,261.39/x
  3. Step 3: Cross multiply
    276,123.20x = 381,042.45 × 155,261.39
  4. Step 4: Simplify right side
    276,123.20x = 59,161,178,530.79
  5. Step 5: Solve for x
    x = 59,161,178,530.79/276,123.20
  6. Step 6: Final answer
    x = 214,256.46

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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.