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Finding the Fourth Proportional to 192,388.48, 288,641.04 and 92,520.40

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Solution

The fourth proportional to 192,388.48, 288,641.04 and 92,520.40 is: 138,808.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,388.48 : 288,641.04 = 92,520.40 : x
  2. Step 2: Convert to fraction form
    192,388.48/288,641.04 = 92,520.40/x
  3. Step 3: Cross multiply
    192,388.48x = 288,641.04 × 92,520.40
  4. Step 4: Simplify right side
    192,388.48x = 26,705,184,477.22
  5. Step 5: Solve for x
    x = 26,705,184,477.22/192,388.48
  6. Step 6: Final answer
    x = 138,808.65

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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.