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Finding the Fourth Proportional to 399,306.69, 550,844.37 and 238,048.11

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Solution

The fourth proportional to 399,306.69, 550,844.37 and 238,048.11 is: 328,387.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,306.69 : 550,844.37 = 238,048.11 : x
  2. Step 2: Convert to fraction form
    399,306.69/550,844.37 = 238,048.11/x
  3. Step 3: Cross multiply
    399,306.69x = 550,844.37 × 238,048.11
  4. Step 4: Simplify right side
    399,306.69x = 131,127,461,182.64
  5. Step 5: Solve for x
    x = 131,127,461,182.64/399,306.69
  6. Step 6: Final answer
    x = 328,387.84

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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.