Home / 443,332.20-665,220.78-206,693.40

Finding the Fourth Proportional to 443,332.20, 665,220.78 and 206,693.40

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Solution

The fourth proportional to 443,332.20, 665,220.78 and 206,693.40 is: 310,143.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,332.20 : 665,220.78 = 206,693.40 : x
  2. Step 2: Convert to fraction form
    443,332.20/665,220.78 = 206,693.40/x
  3. Step 3: Cross multiply
    443,332.20x = 665,220.78 × 206,693.40
  4. Step 4: Simplify right side
    443,332.20x = 137,496,744,768.85
  5. Step 5: Solve for x
    x = 137,496,744,768.85/443,332.20
  6. Step 6: Final answer
    x = 310,143.83

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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.