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Finding the Fourth Proportional to 617,821.60, 926,718.72 and 168,534.40

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Solution

The fourth proportional to 617,821.60, 926,718.72 and 168,534.40 is: 252,797.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,821.60 : 926,718.72 = 168,534.40 : x
  2. Step 2: Convert to fraction form
    617,821.60/926,718.72 = 168,534.40/x
  3. Step 3: Cross multiply
    617,821.60x = 926,718.72 × 168,534.40
  4. Step 4: Simplify right side
    617,821.60x = 156,183,983,443.97
  5. Step 5: Solve for x
    x = 156,183,983,443.97/617,821.60
  6. Step 6: Final answer
    x = 252,797.87

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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.