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Finding the Fourth Proportional to 324,031.20, 485,816.40 and 124,274.40

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Solution

The fourth proportional to 324,031.20, 485,816.40 and 124,274.40 is: 186,323.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,031.20 : 485,816.40 = 124,274.40 : x
  2. Step 2: Convert to fraction form
    324,031.20/485,816.40 = 124,274.40/x
  3. Step 3: Cross multiply
    324,031.20x = 485,816.40 × 124,274.40
  4. Step 4: Simplify right side
    324,031.20x = 60,374,541,620.16
  5. Step 5: Solve for x
    x = 60,374,541,620.16/324,031.20
  6. Step 6: Final answer
    x = 186,323.24

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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.