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Finding the Fourth Proportional to 325,555.20, 488,851.20 and 220,838.40

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Solution

The fourth proportional to 325,555.20, 488,851.20 and 220,838.40 is: 331,609.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,555.20 : 488,851.20 = 220,838.40 : x
  2. Step 2: Convert to fraction form
    325,555.20/488,851.20 = 220,838.40/x
  3. Step 3: Cross multiply
    325,555.20x = 488,851.20 × 220,838.40
  4. Step 4: Simplify right side
    325,555.20x = 107,957,116,846.08
  5. Step 5: Solve for x
    x = 107,957,116,846.08/325,555.20
  6. Step 6: Final answer
    x = 331,609.25

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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.