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Finding the Fourth Proportional to 647,460.68, 971,279.65 and 220,881.97

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Solution

The fourth proportional to 647,460.68, 971,279.65 and 220,881.97 is: 331,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,460.68 : 971,279.65 = 220,881.97 : x
  2. Step 2: Convert to fraction form
    647,460.68/971,279.65 = 220,881.97/x
  3. Step 3: Cross multiply
    647,460.68x = 971,279.65 × 220,881.97
  4. Step 4: Simplify right side
    647,460.68x = 214,538,160,028.93
  5. Step 5: Solve for x
    x = 214,538,160,028.93/647,460.68
  6. Step 6: Final answer
    x = 331,353.19

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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.