Home / 288,649,849.10-398,394,660.78-171,240,349.10

Finding the Fourth Proportional to 288,649,849.10, 398,394,660.78 and 171,240,349.10

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Solution

The fourth proportional to 288,649,849.10, 398,394,660.78 and 171,240,349.10 is: 236,346,012.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,649,849.10 : 398,394,660.78 = 171,240,349.10 : x
  2. Step 2: Convert to fraction form
    288,649,849.10/398,394,660.78 = 171,240,349.10/x
  3. Step 3: Cross multiply
    288,649,849.10x = 398,394,660.78 × 171,240,349.10
  4. Step 4: Simplify right side
    288,649,849.10x = 68,221,240,791,543,272
  5. Step 5: Solve for x
    x = 68,221,240,791,543,272/288,649,849.10
  6. Step 6: Final answer
    x = 236,346,012.32

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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.