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Finding the Fourth Proportional to 319,991.40, 441,585.36 and 176,761.44

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Solution

The fourth proportional to 319,991.40, 441,585.36 and 176,761.44 is: 243,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,991.40 : 441,585.36 = 176,761.44 : x
  2. Step 2: Convert to fraction form
    319,991.40/441,585.36 = 176,761.44/x
  3. Step 3: Cross multiply
    319,991.40x = 441,585.36 × 176,761.44
  4. Step 4: Simplify right side
    319,991.40x = 78,055,264,116.52
  5. Step 5: Solve for x
    x = 78,055,264,116.52/319,991.40
  6. Step 6: Final answer
    x = 243,929.26

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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.