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Finding the Fourth Proportional to 248,191.25, 372,212.89 and 90,382.79

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Solution

The fourth proportional to 248,191.25, 372,212.89 and 90,382.79 is: 135,547.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,191.25 : 372,212.89 = 90,382.79 : x
  2. Step 2: Convert to fraction form
    248,191.25/372,212.89 = 90,382.79/x
  3. Step 3: Cross multiply
    248,191.25x = 372,212.89 × 90,382.79
  4. Step 4: Simplify right side
    248,191.25x = 33,641,640,176.74
  5. Step 5: Solve for x
    x = 33,641,640,176.74/248,191.25
  6. Step 6: Final answer
    x = 135,547.25

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1.5x scale

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.