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Finding the Fourth Proportional to 431,247.50, 646,015.59 and 203,230.88

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Solution

The fourth proportional to 431,247.50, 646,015.59 and 203,230.88 is: 304,443.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,247.50 : 646,015.59 = 203,230.88 : x
  2. Step 2: Convert to fraction form
    431,247.50/646,015.59 = 203,230.88/x
  3. Step 3: Cross multiply
    431,247.50x = 646,015.59 × 203,230.88
  4. Step 4: Simplify right side
    431,247.50x = 131,290,316,849.42
  5. Step 5: Solve for x
    x = 131,290,316,849.42/431,247.50
  6. Step 6: Final answer
    x = 304,443.08

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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.