Home / 319,963.20-480,002.40-132,993.60

Finding the Fourth Proportional to 319,963.20, 480,002.40 and 132,993.60

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Solution

The fourth proportional to 319,963.20, 480,002.40 and 132,993.60 is: 199,514.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,963.20 : 480,002.40 = 132,993.60 : x
  2. Step 2: Convert to fraction form
    319,963.20/480,002.40 = 132,993.60/x
  3. Step 3: Cross multiply
    319,963.20x = 480,002.40 × 132,993.60
  4. Step 4: Simplify right side
    319,963.20x = 63,837,247,184.64
  5. Step 5: Solve for x
    x = 63,837,247,184.64/319,963.20
  6. Step 6: Final answer
    x = 199,514.34

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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.