Home / 276,689.16-381,826.98-155,830.68

Finding the Fourth Proportional to 276,689.16, 381,826.98 and 155,830.68

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Solution

The fourth proportional to 276,689.16, 381,826.98 and 155,830.68 is: 215,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,689.16 : 381,826.98 = 155,830.68 : x
  2. Step 2: Convert to fraction form
    276,689.16/381,826.98 = 155,830.68/x
  3. Step 3: Cross multiply
    276,689.16x = 381,826.98 × 155,830.68
  4. Step 4: Simplify right side
    276,689.16x = 59,500,357,935.75
  5. Step 5: Solve for x
    x = 59,500,357,935.75/276,689.16
  6. Step 6: Final answer
    x = 215,044.05

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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.