Home / 319,142.24-440,308.64-198,240.56

Finding the Fourth Proportional to 319,142.24, 440,308.64 and 198,240.56

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Solution

The fourth proportional to 319,142.24, 440,308.64 and 198,240.56 is: 273,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,142.24 : 440,308.64 = 198,240.56 : x
  2. Step 2: Convert to fraction form
    319,142.24/440,308.64 = 198,240.56/x
  3. Step 3: Cross multiply
    319,142.24x = 440,308.64 × 198,240.56
  4. Step 4: Simplify right side
    319,142.24x = 87,287,031,366.44
  5. Step 5: Solve for x
    x = 87,287,031,366.44/319,142.24
  6. Step 6: Final answer
    x = 273,505.10

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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.