Home / 285,408,000.20-428,112,000.30-199,314,558.20

Finding the Fourth Proportional to 285,408,000.20, 428,112,000.30 and 199,314,558.20

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Solution

The fourth proportional to 285,408,000.20, 428,112,000.30 and 199,314,558.20 is: 298,971,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,408,000.20 : 428,112,000.30 = 199,314,558.20 : x
  2. Step 2: Convert to fraction form
    285,408,000.20/428,112,000.30 = 199,314,558.20/x
  3. Step 3: Cross multiply
    285,408,000.20x = 428,112,000.30 × 199,314,558.20
  4. Step 4: Simplify right side
    285,408,000.20x = 85,328,954,199,912,768
  5. Step 5: Solve for x
    x = 85,328,954,199,912,768/285,408,000.20
  6. Step 6: Final answer
    x = 298,971,837.30

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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.