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Finding the Fourth Proportional to 192,231.60, 288,347.36 and 139,973.64

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Solution

The fourth proportional to 192,231.60, 288,347.36 and 139,973.64 is: 209,960.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,231.60 : 288,347.36 = 139,973.64 : x
  2. Step 2: Convert to fraction form
    192,231.60/288,347.36 = 139,973.64/x
  3. Step 3: Cross multiply
    192,231.60x = 288,347.36 × 139,973.64
  4. Step 4: Simplify right side
    192,231.60x = 40,361,029,563.59
  5. Step 5: Solve for x
    x = 40,361,029,563.59/192,231.60
  6. Step 6: Final answer
    x = 209,960.43

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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.