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Finding the Fourth Proportional to 486,111.54, 729,240.21 and 170,512.86

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Solution

The fourth proportional to 486,111.54, 729,240.21 and 170,512.86 is: 255,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,111.54 : 729,240.21 = 170,512.86 : x
  2. Step 2: Convert to fraction form
    486,111.54/729,240.21 = 170,512.86/x
  3. Step 3: Cross multiply
    486,111.54x = 729,240.21 × 170,512.86
  4. Step 4: Simplify right side
    486,111.54x = 124,344,833,834.10
  5. Step 5: Solve for x
    x = 124,344,833,834.10/486,111.54
  6. Step 6: Final answer
    x = 255,794.86

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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.