Home / 276,787.72-381,888.03-155,886.72

Finding the Fourth Proportional to 276,787.72, 381,888.03 and 155,886.72

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Solution

The fourth proportional to 276,787.72, 381,888.03 and 155,886.72 is: 215,079.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,787.72 : 381,888.03 = 155,886.72 : x
  2. Step 2: Convert to fraction form
    276,787.72/381,888.03 = 155,886.72/x
  3. Step 3: Cross multiply
    276,787.72x = 381,888.03 × 155,886.72
  4. Step 4: Simplify right side
    276,787.72x = 59,531,272,403.96
  5. Step 5: Solve for x
    x = 59,531,272,403.96/276,787.72
  6. Step 6: Final answer
    x = 215,079.17

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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.