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Finding the Fourth Proportional to 640,862.16, 961,347.78 and 167,546.76

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Solution

The fourth proportional to 640,862.16, 961,347.78 and 167,546.76 is: 251,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,862.16 : 961,347.78 = 167,546.76 : x
  2. Step 2: Convert to fraction form
    640,862.16/961,347.78 = 167,546.76/x
  3. Step 3: Cross multiply
    640,862.16x = 961,347.78 × 167,546.76
  4. Step 4: Simplify right side
    640,862.16x = 161,070,705,772.19
  5. Step 5: Solve for x
    x = 161,070,705,772.19/640,862.16
  6. Step 6: Final answer
    x = 251,334.40

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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.