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Finding the Fourth Proportional to 324,061.20, 485,508.60 and 264,574.80

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Solution

The fourth proportional to 324,061.20, 485,508.60 and 264,574.80 is: 396,386.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,061.20 : 485,508.60 = 264,574.80 : x
  2. Step 2: Convert to fraction form
    324,061.20/485,508.60 = 264,574.80/x
  3. Step 3: Cross multiply
    324,061.20x = 485,508.60 × 264,574.80
  4. Step 4: Simplify right side
    324,061.20x = 128,453,340,743.28
  5. Step 5: Solve for x
    x = 128,453,340,743.28/324,061.20
  6. Step 6: Final answer
    x = 396,386.06

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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.