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Finding the Fourth Proportional to 276,915.69, 382,154.90 and 156,062.07

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Solution

The fourth proportional to 276,915.69, 382,154.90 and 156,062.07 is: 215,371.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,915.69 : 382,154.90 = 156,062.07 : x
  2. Step 2: Convert to fraction form
    276,915.69/382,154.90 = 156,062.07/x
  3. Step 3: Cross multiply
    276,915.69x = 382,154.90 × 156,062.07
  4. Step 4: Simplify right side
    276,915.69x = 59,639,883,974.33
  5. Step 5: Solve for x
    x = 59,639,883,974.33/276,915.69
  6. Step 6: Final answer
    x = 215,371.99

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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.