Home / 288,023,986.33-431,987,291.38-80,714,720.05

Finding the Fourth Proportional to 288,023,986.33, 431,987,291.38 and 80,714,720.05

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Solution

The fourth proportional to 288,023,986.33, 431,987,291.38 and 80,714,720.05 is: 121,058,435.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,023,986.33 : 431,987,291.38 = 80,714,720.05 : x
  2. Step 2: Convert to fraction form
    288,023,986.33/431,987,291.38 = 80,714,720.05/x
  3. Step 3: Cross multiply
    288,023,986.33x = 431,987,291.38 × 80,714,720.05
  4. Step 4: Simplify right side
    288,023,986.33x = 34,867,733,288,894,476
  5. Step 5: Solve for x
    x = 34,867,733,288,894,476/288,023,986.33
  6. Step 6: Final answer
    x = 121,058,435.91

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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.