Home / 288,023,985.33-431,987,289.89-80,714,719.05

Finding the Fourth Proportional to 288,023,985.33, 431,987,289.89 and 80,714,719.05

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Solution

The fourth proportional to 288,023,985.33, 431,987,289.89 and 80,714,719.05 is: 121,058,434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,023,985.33 : 431,987,289.89 = 80,714,719.05 : x
  2. Step 2: Convert to fraction form
    288,023,985.33/431,987,289.89 = 80,714,719.05/x
  3. Step 3: Cross multiply
    288,023,985.33x = 431,987,289.89 × 80,714,719.05
  4. Step 4: Simplify right side
    288,023,985.33x = 34,867,732,736,238,680
  5. Step 5: Solve for x
    x = 34,867,732,736,238,680/288,023,985.33
  6. Step 6: Final answer
    x = 121,058,434.41

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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.