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Finding the Fourth Proportional to 431,744.40, 595,807.88 and 238,147.79

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Solution

The fourth proportional to 431,744.40, 595,807.88 and 238,147.79 is: 328,644.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,744.40 : 595,807.88 = 238,147.79 : x
  2. Step 2: Convert to fraction form
    431,744.40/595,807.88 = 238,147.79/x
  3. Step 3: Cross multiply
    431,744.40x = 595,807.88 × 238,147.79
  4. Step 4: Simplify right side
    431,744.40x = 141,890,325,716.81
  5. Step 5: Solve for x
    x = 141,890,325,716.81/431,744.40
  6. Step 6: Final answer
    x = 328,644.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.