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Finding the Fourth Proportional to 363,980.80, 545,971.20 and 223,818.40

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Solution

The fourth proportional to 363,980.80, 545,971.20 and 223,818.40 is: 335,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,980.80 : 545,971.20 = 223,818.40 : x
  2. Step 2: Convert to fraction form
    363,980.80/545,971.20 = 223,818.40/x
  3. Step 3: Cross multiply
    363,980.80x = 545,971.20 × 223,818.40
  4. Step 4: Simplify right side
    363,980.80x = 122,198,400,430.08
  5. Step 5: Solve for x
    x = 122,198,400,430.08/363,980.80
  6. Step 6: Final answer
    x = 335,727.60

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Similar ratio
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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.