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Finding the Fourth Proportional to 480,367.68, 720,551.52 and 125,378.60

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Solution

The fourth proportional to 480,367.68, 720,551.52 and 125,378.60 is: 188,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,367.68 : 720,551.52 = 125,378.60 : x
  2. Step 2: Convert to fraction form
    480,367.68/720,551.52 = 125,378.60/x
  3. Step 3: Cross multiply
    480,367.68x = 720,551.52 × 125,378.60
  4. Step 4: Simplify right side
    480,367.68x = 90,341,740,805.47
  5. Step 5: Solve for x
    x = 90,341,740,805.47/480,367.68
  6. Step 6: Final answer
    x = 188,067.90

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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.