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Finding the Fourth Proportional to 248,109.40, 372,309.90 and 90,353.80

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Solution

The fourth proportional to 248,109.40, 372,309.90 and 90,353.80 is: 135,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,109.40 : 372,309.90 = 90,353.80 : x
  2. Step 2: Convert to fraction form
    248,109.40/372,309.90 = 90,353.80/x
  3. Step 3: Cross multiply
    248,109.40x = 372,309.90 × 90,353.80
  4. Step 4: Simplify right side
    248,109.40x = 33,639,614,242.62
  5. Step 5: Solve for x
    x = 33,639,614,242.62/248,109.40
  6. Step 6: Final answer
    x = 135,583.80

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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.