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Finding the Fourth Proportional to 239,300.30, 358,836.24 and 139,489.26

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Solution

The fourth proportional to 239,300.30, 358,836.24 and 139,489.26 is: 209,167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,300.30 : 358,836.24 = 139,489.26 : x
  2. Step 2: Convert to fraction form
    239,300.30/358,836.24 = 139,489.26/x
  3. Step 3: Cross multiply
    239,300.30x = 358,836.24 × 139,489.26
  4. Step 4: Simplify right side
    239,300.30x = 50,053,801,578.78
  5. Step 5: Solve for x
    x = 50,053,801,578.78/239,300.30
  6. Step 6: Final answer
    x = 209,167.32

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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.