Home / 454,431.20-681,646.80-218,235.20

Finding the Fourth Proportional to 454,431.20, 681,646.80 and 218,235.20

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Solution

The fourth proportional to 454,431.20, 681,646.80 and 218,235.20 is: 327,352.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,431.20 : 681,646.80 = 218,235.20 : x
  2. Step 2: Convert to fraction form
    454,431.20/681,646.80 = 218,235.20/x
  3. Step 3: Cross multiply
    454,431.20x = 681,646.80 × 218,235.20
  4. Step 4: Simplify right side
    454,431.20x = 148,759,325,727.36
  5. Step 5: Solve for x
    x = 148,759,325,727.36/454,431.20
  6. Step 6: Final answer
    x = 327,352.80

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Double scale
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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.