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Finding the Fourth Proportional to 272,805.65, 376,341.41 and 211,959.89

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Solution

The fourth proportional to 272,805.65, 376,341.41 and 211,959.89 is: 292,403.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,805.65 : 376,341.41 = 211,959.89 : x
  2. Step 2: Convert to fraction form
    272,805.65/376,341.41 = 211,959.89/x
  3. Step 3: Cross multiply
    272,805.65x = 376,341.41 × 211,959.89
  4. Step 4: Simplify right side
    272,805.65x = 79,769,283,866.04
  5. Step 5: Solve for x
    x = 79,769,283,866.04/272,805.65
  6. Step 6: Final answer
    x = 292,403.34

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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.