Home / 276,265.54-381,280.20-155,411.92

Finding the Fourth Proportional to 276,265.54, 381,280.20 and 155,411.92

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Solution

The fourth proportional to 276,265.54, 381,280.20 and 155,411.92 is: 214,487.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,265.54 : 381,280.20 = 155,411.92 : x
  2. Step 2: Convert to fraction form
    276,265.54/381,280.20 = 155,411.92/x
  3. Step 3: Cross multiply
    276,265.54x = 381,280.20 × 155,411.92
  4. Step 4: Simplify right side
    276,265.54x = 59,255,487,939.98
  5. Step 5: Solve for x
    x = 59,255,487,939.98/276,265.54
  6. Step 6: Final answer
    x = 214,487.44

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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.