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Finding the Fourth Proportional to 218,203.20, 326,721.60 and 218,203.20

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Solution

The fourth proportional to 218,203.20, 326,721.60 and 218,203.20 is: 326,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,203.20 : 326,721.60 = 218,203.20 : x
  2. Step 2: Convert to fraction form
    218,203.20/326,721.60 = 218,203.20/x
  3. Step 3: Cross multiply
    218,203.20x = 326,721.60 × 218,203.20
  4. Step 4: Simplify right side
    218,203.20x = 71,291,698,629.12
  5. Step 5: Solve for x
    x = 71,291,698,629.12/218,203.20
  6. Step 6: Final answer
    x = 326,721.60

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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.