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Finding the Fourth Proportional to 324,019.60, 486,029.40 and 199,430.80

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Solution

The fourth proportional to 324,019.60, 486,029.40 and 199,430.80 is: 299,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,019.60 : 486,029.40 = 199,430.80 : x
  2. Step 2: Convert to fraction form
    324,019.60/486,029.40 = 199,430.80/x
  3. Step 3: Cross multiply
    324,019.60x = 486,029.40 × 199,430.80
  4. Step 4: Simplify right side
    324,019.60x = 96,929,232,065.52
  5. Step 5: Solve for x
    x = 96,929,232,065.52/324,019.60
  6. Step 6: Final answer
    x = 299,146.20

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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.