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Finding the Fourth Proportional to 239,306.11, 330,012.16 and 157,488.01

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Solution

The fourth proportional to 239,306.11, 330,012.16 and 157,488.01 is: 217,181.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,306.11 : 330,012.16 = 157,488.01 : x
  2. Step 2: Convert to fraction form
    239,306.11/330,012.16 = 157,488.01/x
  3. Step 3: Cross multiply
    239,306.11x = 330,012.16 × 157,488.01
  4. Step 4: Simplify right side
    239,306.11x = 51,972,958,354.20
  5. Step 5: Solve for x
    x = 51,972,958,354.20/239,306.11
  6. Step 6: Final answer
    x = 217,181.91

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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.