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Finding the Fourth Proportional to 250,235.80, 345,329.82 and 137,051.20

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Solution

The fourth proportional to 250,235.80, 345,329.82 and 137,051.20 is: 189,133.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,235.80 : 345,329.82 = 137,051.20 : x
  2. Step 2: Convert to fraction form
    250,235.80/345,329.82 = 137,051.20/x
  3. Step 3: Cross multiply
    250,235.80x = 345,329.82 × 137,051.20
  4. Step 4: Simplify right side
    250,235.80x = 47,327,866,226.78
  5. Step 5: Solve for x
    x = 47,327,866,226.78/250,235.80
  6. Step 6: Final answer
    x = 189,133.07

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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.