Home / 288,649,820.10-398,394,620.73-171,240,320.10

Finding the Fourth Proportional to 288,649,820.10, 398,394,620.73 and 171,240,320.10

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Solution

The fourth proportional to 288,649,820.10, 398,394,620.73 and 171,240,320.10 is: 236,345,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,649,820.10 : 398,394,620.73 = 171,240,320.10 : x
  2. Step 2: Convert to fraction form
    288,649,820.10/398,394,620.73 = 171,240,320.10/x
  3. Step 3: Cross multiply
    288,649,820.10x = 398,394,620.73 × 171,240,320.10
  4. Step 4: Simplify right side
    288,649,820.10x = 68,221,222,379,923,296
  5. Step 5: Solve for x
    x = 68,221,222,379,923,296/288,649,820.10
  6. Step 6: Final answer
    x = 236,345,972.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.