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Finding the Fourth Proportional to 324,070.20, 485,874.90 and 124,313.40

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Solution

The fourth proportional to 324,070.20, 485,874.90 and 124,313.40 is: 186,381.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,070.20 : 485,874.90 = 124,313.40 : x
  2. Step 2: Convert to fraction form
    324,070.20/485,874.90 = 124,313.40/x
  3. Step 3: Cross multiply
    324,070.20x = 485,874.90 × 124,313.40
  4. Step 4: Simplify right side
    324,070.20x = 60,400,760,793.66
  5. Step 5: Solve for x
    x = 60,400,760,793.66/324,070.20
  6. Step 6: Final answer
    x = 186,381.72

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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.