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Finding the Fourth Proportional to 640,861.66, 961,347.03 and 167,546.26

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Solution

The fourth proportional to 640,861.66, 961,347.03 and 167,546.26 is: 251,333.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,861.66 : 961,347.03 = 167,546.26 : x
  2. Step 2: Convert to fraction form
    640,861.66/961,347.03 = 167,546.26/x
  3. Step 3: Cross multiply
    640,861.66x = 961,347.03 × 167,546.26
  4. Step 4: Simplify right side
    640,861.66x = 161,070,099,438.61
  5. Step 5: Solve for x
    x = 161,070,099,438.61/640,861.66
  6. Step 6: Final answer
    x = 251,333.65

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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.