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Finding the Fourth Proportional to 225,683.20, 311,548.80 and 140,924.80

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Solution

The fourth proportional to 225,683.20, 311,548.80 and 140,924.80 is: 194,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,683.20 : 311,548.80 = 140,924.80 : x
  2. Step 2: Convert to fraction form
    225,683.20/311,548.80 = 140,924.80/x
  3. Step 3: Cross multiply
    225,683.20x = 311,548.80 × 140,924.80
  4. Step 4: Simplify right side
    225,683.20x = 43,904,952,330.24
  5. Step 5: Solve for x
    x = 43,904,952,330.24/225,683.20
  6. Step 6: Final answer
    x = 194,542.40

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1.5x scale

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.