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Finding the Fourth Proportional to 239,064.54, 329,916.32 and 131,638.42

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Solution

The fourth proportional to 239,064.54, 329,916.32 and 131,638.42 is: 181,665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,064.54 : 329,916.32 = 131,638.42 : x
  2. Step 2: Convert to fraction form
    239,064.54/329,916.32 = 131,638.42/x
  3. Step 3: Cross multiply
    239,064.54x = 329,916.32 × 131,638.42
  4. Step 4: Simplify right side
    239,064.54x = 43,429,661,776.53
  5. Step 5: Solve for x
    x = 43,429,661,776.53/239,064.54
  6. Step 6: Final answer
    x = 181,665.01

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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.