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Finding the Fourth Proportional to 640,154.94, 960,233.13 and 166,839.90

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Solution

The fourth proportional to 640,154.94, 960,233.13 and 166,839.90 is: 250,260.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,154.94 : 960,233.13 = 166,839.90 : x
  2. Step 2: Convert to fraction form
    640,154.94/960,233.13 = 166,839.90/x
  3. Step 3: Cross multiply
    640,154.94x = 960,233.13 × 166,839.90
  4. Step 4: Simplify right side
    640,154.94x = 160,205,199,385.89
  5. Step 5: Solve for x
    x = 160,205,199,385.89/640,154.94
  6. Step 6: Final answer
    x = 250,260.04

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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.