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Finding the Fourth Proportional to 486,872.60, 671,871.78 and 272,014.27

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Solution

The fourth proportional to 486,872.60, 671,871.78 and 272,014.27 is: 375,372.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,872.60 : 671,871.78 = 272,014.27 : x
  2. Step 2: Convert to fraction form
    486,872.60/671,871.78 = 272,014.27/x
  3. Step 3: Cross multiply
    486,872.60x = 671,871.78 × 272,014.27
  4. Step 4: Simplify right side
    486,872.60x = 182,758,710,090.62
  5. Step 5: Solve for x
    x = 182,758,710,090.62/486,872.60
  6. Step 6: Final answer
    x = 375,372.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.