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Finding the Fourth Proportional to 168,435,253.20, 252,652,879.80 and 143,776,390.80

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Solution

The fourth proportional to 168,435,253.20, 252,652,879.80 and 143,776,390.80 is: 215,664,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,435,253.20 : 252,652,879.80 = 143,776,390.80 : x
  2. Step 2: Convert to fraction form
    168,435,253.20/252,652,879.80 = 143,776,390.80/x
  3. Step 3: Cross multiply
    168,435,253.20x = 252,652,879.80 × 143,776,390.80
  4. Step 4: Simplify right side
    168,435,253.20x = 36,325,519,182,870,232
  5. Step 5: Solve for x
    x = 36,325,519,182,870,232/168,435,253.20
  6. Step 6: Final answer
    x = 215,664,586.20

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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.