Home / 217,815.80-326,723.70-129,023.60

Finding the Fourth Proportional to 217,815.80, 326,723.70 and 129,023.60

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Solution

The fourth proportional to 217,815.80, 326,723.70 and 129,023.60 is: 193,535.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,815.80 : 326,723.70 = 129,023.60 : x
  2. Step 2: Convert to fraction form
    217,815.80/326,723.70 = 129,023.60/x
  3. Step 3: Cross multiply
    217,815.80x = 326,723.70 × 129,023.60
  4. Step 4: Simplify right side
    217,815.80x = 42,155,067,979.32
  5. Step 5: Solve for x
    x = 42,155,067,979.32/217,815.80
  6. Step 6: Final answer
    x = 193,535.40

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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.