Home / 287,481,885.64-431,295,399.06-80,220,122.44

Finding the Fourth Proportional to 287,481,885.64, 431,295,399.06 and 80,220,122.44

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Solution

The fourth proportional to 287,481,885.64, 431,295,399.06 and 80,220,122.44 is: 120,350,434.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,481,885.64 : 431,295,399.06 = 80,220,122.44 : x
  2. Step 2: Convert to fraction form
    287,481,885.64/431,295,399.06 = 80,220,122.44/x
  3. Step 3: Cross multiply
    287,481,885.64x = 431,295,399.06 × 80,220,122.44
  4. Step 4: Simplify right side
    287,481,885.64x = 34,598,569,720,401,860
  5. Step 5: Solve for x
    x = 34,598,569,720,401,860/287,481,885.64
  6. Step 6: Final answer
    x = 120,350,434.06

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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.