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Finding the Fourth Proportional to 647,460.58, 971,279.51 and 220,881.87

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Solution

The fourth proportional to 647,460.58, 971,279.51 and 220,881.87 is: 331,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,460.58 : 971,279.51 = 220,881.87 : x
  2. Step 2: Convert to fraction form
    647,460.58/971,279.51 = 220,881.87/x
  3. Step 3: Cross multiply
    647,460.58x = 971,279.51 × 220,881.87
  4. Step 4: Simplify right side
    647,460.58x = 214,538,037,454.66
  5. Step 5: Solve for x
    x = 214,538,037,454.66/647,460.58
  6. Step 6: Final answer
    x = 331,353.05

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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.