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Finding the Fourth Proportional to 239,209, 330,123.54 and 131,779.24

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Solution

The fourth proportional to 239,209, 330,123.54 and 131,779.24 is: 181,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,209 : 330,123.54 = 131,779.24 : x
  2. Step 2: Convert to fraction form
    239,209/330,123.54 = 131,779.24/x
  3. Step 3: Cross multiply
    239,209x = 330,123.54 × 131,779.24
  4. Step 4: Simplify right side
    239,209x = 43,503,429,207.31
  5. Step 5: Solve for x
    x = 43,503,429,207.31/239,209
  6. Step 6: Final answer
    x = 181,863.68

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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.