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Finding the Fourth Proportional to 276,351.95, 381,373.14 and 155,497.53

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Solution

The fourth proportional to 276,351.95, 381,373.14 and 155,497.53 is: 214,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,351.95 : 381,373.14 = 155,497.53 : x
  2. Step 2: Convert to fraction form
    276,351.95/381,373.14 = 155,497.53/x
  3. Step 3: Cross multiply
    276,351.95x = 381,373.14 × 155,497.53
  4. Step 4: Simplify right side
    276,351.95x = 59,302,581,278.34
  5. Step 5: Solve for x
    x = 59,302,581,278.34/276,351.95
  6. Step 6: Final answer
    x = 214,590.78

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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.