Home / 442,865.20-664,297.80-218,268.40

Finding the Fourth Proportional to 442,865.20, 664,297.80 and 218,268.40

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Solution

The fourth proportional to 442,865.20, 664,297.80 and 218,268.40 is: 327,402.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,865.20 : 664,297.80 = 218,268.40 : x
  2. Step 2: Convert to fraction form
    442,865.20/664,297.80 = 218,268.40/x
  3. Step 3: Cross multiply
    442,865.20x = 664,297.80 × 218,268.40
  4. Step 4: Simplify right side
    442,865.20x = 144,995,217,929.52
  5. Step 5: Solve for x
    x = 144,995,217,929.52/442,865.20
  6. Step 6: Final answer
    x = 327,402.60

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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.