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Finding the Fourth Proportional to 239,393.94, 330,380.55 and 137,436

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Solution

The fourth proportional to 239,393.94, 330,380.55 and 137,436 is: 189,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,393.94 : 330,380.55 = 137,436 : x
  2. Step 2: Convert to fraction form
    239,393.94/330,380.55 = 137,436/x
  3. Step 3: Cross multiply
    239,393.94x = 330,380.55 × 137,436
  4. Step 4: Simplify right side
    239,393.94x = 45,406,181,269.80
  5. Step 5: Solve for x
    x = 45,406,181,269.80/239,393.94
  6. Step 6: Final answer
    x = 189,671.39

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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.