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Finding the Fourth Proportional to 324,112.48, 486,168.72 and 87,455.16

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Solution

The fourth proportional to 324,112.48, 486,168.72 and 87,455.16 is: 131,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,112.48 : 486,168.72 = 87,455.16 : x
  2. Step 2: Convert to fraction form
    324,112.48/486,168.72 = 87,455.16/x
  3. Step 3: Cross multiply
    324,112.48x = 486,168.72 × 87,455.16
  4. Step 4: Simplify right side
    324,112.48x = 42,517,963,194.60
  5. Step 5: Solve for x
    x = 42,517,963,194.60/324,112.48
  6. Step 6: Final answer
    x = 131,182.74

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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.