Home / 217,821.80-326,732.70-129,029.60

Finding the Fourth Proportional to 217,821.80, 326,732.70 and 129,029.60

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Solution

The fourth proportional to 217,821.80, 326,732.70 and 129,029.60 is: 193,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,821.80 : 326,732.70 = 129,029.60 : x
  2. Step 2: Convert to fraction form
    217,821.80/326,732.70 = 129,029.60/x
  3. Step 3: Cross multiply
    217,821.80x = 326,732.70 × 129,029.60
  4. Step 4: Simplify right side
    217,821.80x = 42,158,189,587.92
  5. Step 5: Solve for x
    x = 42,158,189,587.92/217,821.80
  6. Step 6: Final answer
    x = 193,544.40

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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.