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Finding the Fourth Proportional to 522,821.40, 784,232.10 and 167,871.30

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Solution

The fourth proportional to 522,821.40, 784,232.10 and 167,871.30 is: 251,806.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,821.40 : 784,232.10 = 167,871.30 : x
  2. Step 2: Convert to fraction form
    522,821.40/784,232.10 = 167,871.30/x
  3. Step 3: Cross multiply
    522,821.40x = 784,232.10 × 167,871.30
  4. Step 4: Simplify right side
    522,821.40x = 131,650,062,128.73
  5. Step 5: Solve for x
    x = 131,650,062,128.73/522,821.40
  6. Step 6: Final answer
    x = 251,806.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.