Home / 276,439.15-381,498.31-155,588.28

Finding the Fourth Proportional to 276,439.15, 381,498.31 and 155,588.28

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Solution

The fourth proportional to 276,439.15, 381,498.31 and 155,588.28 is: 214,718.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,439.15 : 381,498.31 = 155,588.28 : x
  2. Step 2: Convert to fraction form
    276,439.15/381,498.31 = 155,588.28/x
  3. Step 3: Cross multiply
    276,439.15x = 381,498.31 × 155,588.28
  4. Step 4: Simplify right side
    276,439.15x = 59,356,665,875.81
  5. Step 5: Solve for x
    x = 59,356,665,875.81/276,439.15
  6. Step 6: Final answer
    x = 214,718.74

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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.