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Finding the Fourth Proportional to 250,438.87, 345,641.07 and 154,976.32

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Solution

The fourth proportional to 250,438.87, 345,641.07 and 154,976.32 is: 213,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,438.87 : 345,641.07 = 154,976.32 : x
  2. Step 2: Convert to fraction form
    250,438.87/345,641.07 = 154,976.32/x
  3. Step 3: Cross multiply
    250,438.87x = 345,641.07 × 154,976.32
  4. Step 4: Simplify right side
    250,438.87x = 53,566,181,069.46
  5. Step 5: Solve for x
    x = 53,566,181,069.46/250,438.87
  6. Step 6: Final answer
    x = 213,889.25

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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.