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Finding the Fourth Proportional to 159,324.60, 238,986.90 and 139,625.40

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Solution

The fourth proportional to 159,324.60, 238,986.90 and 139,625.40 is: 209,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,324.60 : 238,986.90 = 139,625.40 : x
  2. Step 2: Convert to fraction form
    159,324.60/238,986.90 = 139,625.40/x
  3. Step 3: Cross multiply
    159,324.60x = 238,986.90 × 139,625.40
  4. Step 4: Simplify right side
    159,324.60x = 33,368,641,507.26
  5. Step 5: Solve for x
    x = 33,368,641,507.26/159,324.60
  6. Step 6: Final answer
    x = 209,438.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.