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Finding the Fourth Proportional to 431,052.90, 646,539.42 and 203,296.28

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Solution

The fourth proportional to 431,052.90, 646,539.42 and 203,296.28 is: 304,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,052.90 : 646,539.42 = 203,296.28 : x
  2. Step 2: Convert to fraction form
    431,052.90/646,539.42 = 203,296.28/x
  3. Step 3: Cross multiply
    431,052.90x = 646,539.42 × 203,296.28
  4. Step 4: Simplify right side
    431,052.90x = 131,439,058,959.36
  5. Step 5: Solve for x
    x = 131,439,058,959.36/431,052.90
  6. Step 6: Final answer
    x = 304,925.59

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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.