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Finding the Fourth Proportional to 324,586.20, 486,648.90 and 124,829.40

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Solution

The fourth proportional to 324,586.20, 486,648.90 and 124,829.40 is: 187,155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,586.20 : 486,648.90 = 124,829.40 : x
  2. Step 2: Convert to fraction form
    324,586.20/486,648.90 = 124,829.40/x
  3. Step 3: Cross multiply
    324,586.20x = 486,648.90 × 124,829.40
  4. Step 4: Simplify right side
    324,586.20x = 60,748,090,197.66
  5. Step 5: Solve for x
    x = 60,748,090,197.66/324,586.20
  6. Step 6: Final answer
    x = 187,155.49

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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.