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Finding the Fourth Proportional to 324,081.40, 486,122.10 and 305,710.60

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Solution

The fourth proportional to 324,081.40, 486,122.10 and 305,710.60 is: 458,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,081.40 : 486,122.10 = 305,710.60 : x
  2. Step 2: Convert to fraction form
    324,081.40/486,122.10 = 305,710.60/x
  3. Step 3: Cross multiply
    324,081.40x = 486,122.10 × 305,710.60
  4. Step 4: Simplify right side
    324,081.40x = 148,612,678,864.26
  5. Step 5: Solve for x
    x = 148,612,678,864.26/324,081.40
  6. Step 6: Final answer
    x = 458,565.90

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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.