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Finding the Fourth Proportional to 288,233.40, 431,183.70 and 253,241.40

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Solution

The fourth proportional to 288,233.40, 431,183.70 and 253,241.40 is: 378,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,233.40 : 431,183.70 = 253,241.40 : x
  2. Step 2: Convert to fraction form
    288,233.40/431,183.70 = 253,241.40/x
  3. Step 3: Cross multiply
    288,233.40x = 431,183.70 × 253,241.40
  4. Step 4: Simplify right side
    288,233.40x = 109,193,563,845.18
  5. Step 5: Solve for x
    x = 109,193,563,845.18/288,233.40
  6. Step 6: Final answer
    x = 378,837.30

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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.