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Finding the Fourth Proportional to 431,486.74, 646,375.74 and 203,470.12

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Solution

The fourth proportional to 431,486.74, 646,375.74 and 203,470.12 is: 304,802.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,486.74 : 646,375.74 = 203,470.12 : x
  2. Step 2: Convert to fraction form
    431,486.74/646,375.74 = 203,470.12/x
  3. Step 3: Cross multiply
    431,486.74x = 646,375.74 × 203,470.12
  4. Step 4: Simplify right side
    431,486.74x = 131,518,149,382.89
  5. Step 5: Solve for x
    x = 131,518,149,382.89/431,486.74
  6. Step 6: Final answer
    x = 304,802.30

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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.