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Finding the Fourth Proportional to 486,190.47, 729,611.87 and 170,648.31

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Solution

The fourth proportional to 486,190.47, 729,611.87 and 170,648.31 is: 256,086.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,190.47 : 729,611.87 = 170,648.31 : x
  2. Step 2: Convert to fraction form
    486,190.47/729,611.87 = 170,648.31/x
  3. Step 3: Cross multiply
    486,190.47x = 729,611.87 × 170,648.31
  4. Step 4: Simplify right side
    486,190.47x = 124,507,031,718.20
  5. Step 5: Solve for x
    x = 124,507,031,718.20/486,190.47
  6. Step 6: Final answer
    x = 256,086.94

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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.