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Finding the Fourth Proportional to 486,189.72, 729,610.74 and 170,647.56

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Solution

The fourth proportional to 486,189.72, 729,610.74 and 170,647.56 is: 256,085.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,189.72 : 729,610.74 = 170,647.56 : x
  2. Step 2: Convert to fraction form
    486,189.72/729,610.74 = 170,647.56/x
  3. Step 3: Cross multiply
    486,189.72x = 729,610.74 × 170,647.56
  4. Step 4: Simplify right side
    486,189.72x = 124,506,292,530.79
  5. Step 5: Solve for x
    x = 124,506,292,530.79/486,189.72
  6. Step 6: Final answer
    x = 256,085.82

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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.