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Finding the Fourth Proportional to 276,497.04, 381,489.48 and 155,631.27

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Solution

The fourth proportional to 276,497.04, 381,489.48 and 155,631.27 is: 214,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,497.04 : 381,489.48 = 155,631.27 : x
  2. Step 2: Convert to fraction form
    276,497.04/381,489.48 = 155,631.27/x
  3. Step 3: Cross multiply
    276,497.04x = 381,489.48 × 155,631.27
  4. Step 4: Simplify right side
    276,497.04x = 59,371,692,264.04
  5. Step 5: Solve for x
    x = 59,371,692,264.04/276,497.04
  6. Step 6: Final answer
    x = 214,728.13

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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.