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Finding the Fourth Proportional to 259,679.20, 389,518.80 and 166,367.20

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Solution

The fourth proportional to 259,679.20, 389,518.80 and 166,367.20 is: 249,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,679.20 : 389,518.80 = 166,367.20 : x
  2. Step 2: Convert to fraction form
    259,679.20/389,518.80 = 166,367.20/x
  3. Step 3: Cross multiply
    259,679.20x = 389,518.80 × 166,367.20
  4. Step 4: Simplify right side
    259,679.20x = 64,803,152,103.36
  5. Step 5: Solve for x
    x = 64,803,152,103.36/259,679.20
  6. Step 6: Final answer
    x = 249,550.80

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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.