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Finding the Fourth Proportional to 441,805.20, 662,707.80 and 217,200.30

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Solution

The fourth proportional to 441,805.20, 662,707.80 and 217,200.30 is: 325,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,805.20 : 662,707.80 = 217,200.30 : x
  2. Step 2: Convert to fraction form
    441,805.20/662,707.80 = 217,200.30/x
  3. Step 3: Cross multiply
    441,805.20x = 662,707.80 × 217,200.30
  4. Step 4: Simplify right side
    441,805.20x = 143,940,332,972.34
  5. Step 5: Solve for x
    x = 143,940,332,972.34/441,805.20
  6. Step 6: Final answer
    x = 325,800.45

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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.