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Finding the Fourth Proportional to 319,309.52, 440,631.30 and 181,470.50

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Solution

The fourth proportional to 319,309.52, 440,631.30 and 181,470.50 is: 250,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,309.52 : 440,631.30 = 181,470.50 : x
  2. Step 2: Convert to fraction form
    319,309.52/440,631.30 = 181,470.50/x
  3. Step 3: Cross multiply
    319,309.52x = 440,631.30 × 181,470.50
  4. Step 4: Simplify right side
    319,309.52x = 79,961,582,326.65
  5. Step 5: Solve for x
    x = 79,961,582,326.65/319,309.52
  6. Step 6: Final answer
    x = 250,420.29

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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.