Home / 288,023,980.82-431,987,283.14-80,714,714.57

Finding the Fourth Proportional to 288,023,980.82, 431,987,283.14 and 80,714,714.57

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Solution

The fourth proportional to 288,023,980.82, 431,987,283.14 and 80,714,714.57 is: 121,058,427.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,023,980.82 : 431,987,283.14 = 80,714,714.57 : x
  2. Step 2: Convert to fraction form
    288,023,980.82/431,987,283.14 = 80,714,714.57/x
  3. Step 3: Cross multiply
    288,023,980.82x = 431,987,283.14 × 80,714,714.57
  4. Step 4: Simplify right side
    288,023,980.82x = 34,867,730,253,951,360
  5. Step 5: Solve for x
    x = 34,867,730,253,951,360/288,023,980.82
  6. Step 6: Final answer
    x = 121,058,427.69

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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.