Home / 217,617.60-326,426.40-147,115.20

Finding the Fourth Proportional to 217,617.60, 326,426.40 and 147,115.20

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Solution

The fourth proportional to 217,617.60, 326,426.40 and 147,115.20 is: 220,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,617.60 : 326,426.40 = 147,115.20 : x
  2. Step 2: Convert to fraction form
    217,617.60/326,426.40 = 147,115.20/x
  3. Step 3: Cross multiply
    217,617.60x = 326,426.40 × 147,115.20
  4. Step 4: Simplify right side
    217,617.60x = 48,022,285,121.28
  5. Step 5: Solve for x
    x = 48,022,285,121.28/217,617.60
  6. Step 6: Final answer
    x = 220,672.80

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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.