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Finding the Fourth Proportional to 270,003.20, 405,004.80 and 259,635.20

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Solution

The fourth proportional to 270,003.20, 405,004.80 and 259,635.20 is: 389,452.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,003.20 : 405,004.80 = 259,635.20 : x
  2. Step 2: Convert to fraction form
    270,003.20/405,004.80 = 259,635.20/x
  3. Step 3: Cross multiply
    270,003.20x = 405,004.80 × 259,635.20
  4. Step 4: Simplify right side
    270,003.20x = 105,153,502,248.96
  5. Step 5: Solve for x
    x = 105,153,502,248.96/270,003.20
  6. Step 6: Final answer
    x = 389,452.80

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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.