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Finding the Fourth Proportional to 486,489.78, 729,773.55 and 171,017.46

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Solution

The fourth proportional to 486,489.78, 729,773.55 and 171,017.46 is: 256,539.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,489.78 : 729,773.55 = 171,017.46 : x
  2. Step 2: Convert to fraction form
    486,489.78/729,773.55 = 171,017.46/x
  3. Step 3: Cross multiply
    486,489.78x = 729,773.55 × 171,017.46
  4. Step 4: Simplify right side
    486,489.78x = 124,804,018,896.18
  5. Step 5: Solve for x
    x = 124,804,018,896.18/486,489.78
  6. Step 6: Final answer
    x = 256,539.86

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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.