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Finding the Fourth Proportional to 192,156.60, 288,347.22 and 138,795.96

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Solution

The fourth proportional to 192,156.60, 288,347.22 and 138,795.96 is: 208,275.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,156.60 : 288,347.22 = 138,795.96 : x
  2. Step 2: Convert to fraction form
    192,156.60/288,347.22 = 138,795.96/x
  3. Step 3: Cross multiply
    192,156.60x = 288,347.22 × 138,795.96
  4. Step 4: Simplify right side
    192,156.60x = 40,021,429,213.23
  5. Step 5: Solve for x
    x = 40,021,429,213.23/192,156.60
  6. Step 6: Final answer
    x = 208,275.07

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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.