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Finding the Fourth Proportional to 486,611.04, 729,954.90 and 171,138.72

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Solution

The fourth proportional to 486,611.04, 729,954.90 and 171,138.72 is: 256,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,611.04 : 729,954.90 = 171,138.72 : x
  2. Step 2: Convert to fraction form
    486,611.04/729,954.90 = 171,138.72/x
  3. Step 3: Cross multiply
    486,611.04x = 729,954.90 × 171,138.72
  4. Step 4: Simplify right side
    486,611.04x = 124,923,547,243.73
  5. Step 5: Solve for x
    x = 124,923,547,243.73/486,611.04
  6. Step 6: Final answer
    x = 256,721.56

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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.