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Finding the Fourth Proportional to 165,957,563.80, 248,936,345.70 and 154,620,155.80

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Solution

The fourth proportional to 165,957,563.80, 248,936,345.70 and 154,620,155.80 is: 231,930,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,957,563.80 : 248,936,345.70 = 154,620,155.80 : x
  2. Step 2: Convert to fraction form
    165,957,563.80/248,936,345.70 = 154,620,155.80/x
  3. Step 3: Cross multiply
    165,957,563.80x = 248,936,345.70 × 154,620,155.80
  4. Step 4: Simplify right side
    165,957,563.80x = 38,490,576,556,416,664
  5. Step 5: Solve for x
    x = 38,490,576,556,416,664/165,957,563.80
  6. Step 6: Final answer
    x = 231,930,233.70

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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.