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Finding the Fourth Proportional to 191,846.40, 288,115.20 and 185,625.60

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Solution

The fourth proportional to 191,846.40, 288,115.20 and 185,625.60 is: 278,772.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,846.40 : 288,115.20 = 185,625.60 : x
  2. Step 2: Convert to fraction form
    191,846.40/288,115.20 = 185,625.60/x
  3. Step 3: Cross multiply
    191,846.40x = 288,115.20 × 185,625.60
  4. Step 4: Simplify right side
    191,846.40x = 53,481,556,869.12
  5. Step 5: Solve for x
    x = 53,481,556,869.12/191,846.40
  6. Step 6: Final answer
    x = 278,772.79

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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.