Home / 445,527.20-668,365.68-220,898.72

Finding the Fourth Proportional to 445,527.20, 668,365.68 and 220,898.72

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Solution

The fourth proportional to 445,527.20, 668,365.68 and 220,898.72 is: 331,385.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,527.20 : 668,365.68 = 220,898.72 : x
  2. Step 2: Convert to fraction form
    445,527.20/668,365.68 = 220,898.72/x
  3. Step 3: Cross multiply
    445,527.20x = 668,365.68 × 220,898.72
  4. Step 4: Simplify right side
    445,527.20x = 147,641,123,203.93
  5. Step 5: Solve for x
    x = 147,641,123,203.93/445,527.20
  6. Step 6: Final answer
    x = 331,385.21

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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.