Home / 442,986.20-664,025.70-218,000.60

Finding the Fourth Proportional to 442,986.20, 664,025.70 and 218,000.60

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Solution

The fourth proportional to 442,986.20, 664,025.70 and 218,000.60 is: 326,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,986.20 : 664,025.70 = 218,000.60 : x
  2. Step 2: Convert to fraction form
    442,986.20/664,025.70 = 218,000.60/x
  3. Step 3: Cross multiply
    442,986.20x = 664,025.70 × 218,000.60
  4. Step 4: Simplify right side
    442,986.20x = 144,758,001,015.42
  5. Step 5: Solve for x
    x = 144,758,001,015.42/442,986.20
  6. Step 6: Final answer
    x = 326,777.68

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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.