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Finding the Fourth Proportional to 325,391.20, 488,000.40 and 100,751.20

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Solution

The fourth proportional to 325,391.20, 488,000.40 and 100,751.20 is: 151,100.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,391.20 : 488,000.40 = 100,751.20 : x
  2. Step 2: Convert to fraction form
    325,391.20/488,000.40 = 100,751.20/x
  3. Step 3: Cross multiply
    325,391.20x = 488,000.40 × 100,751.20
  4. Step 4: Simplify right side
    325,391.20x = 49,166,625,900.48
  5. Step 5: Solve for x
    x = 49,166,625,900.48/325,391.20
  6. Step 6: Final answer
    x = 151,100.05

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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.