Home / 276,760.18-381,878.28-155,875.60

Finding the Fourth Proportional to 276,760.18, 381,878.28 and 155,875.60

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Solution

The fourth proportional to 276,760.18, 381,878.28 and 155,875.60 is: 215,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,760.18 : 381,878.28 = 155,875.60 : x
  2. Step 2: Convert to fraction form
    276,760.18/381,878.28 = 155,875.60/x
  3. Step 3: Cross multiply
    276,760.18x = 381,878.28 × 155,875.60
  4. Step 4: Simplify right side
    276,760.18x = 59,525,506,021.97
  5. Step 5: Solve for x
    x = 59,525,506,021.97/276,760.18
  6. Step 6: Final answer
    x = 215,079.73

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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.