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Finding the Fourth Proportional to 324,005.20, 485,424.60 and 264,518.80

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Solution

The fourth proportional to 324,005.20, 485,424.60 and 264,518.80 is: 396,302.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,005.20 : 485,424.60 = 264,518.80 : x
  2. Step 2: Convert to fraction form
    324,005.20/485,424.60 = 264,518.80/x
  3. Step 3: Cross multiply
    324,005.20x = 485,424.60 × 264,518.80
  4. Step 4: Simplify right side
    324,005.20x = 128,403,932,682.48
  5. Step 5: Solve for x
    x = 128,403,932,682.48/324,005.20
  6. Step 6: Final answer
    x = 396,302.07

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1.5x scale

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.