Home / 217,486,987.80-326,230,481.70-131,490,648.60

Finding the Fourth Proportional to 217,486,987.80, 326,230,481.70 and 131,490,648.60

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Solution

The fourth proportional to 217,486,987.80, 326,230,481.70 and 131,490,648.60 is: 197,235,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,486,987.80 : 326,230,481.70 = 131,490,648.60 : x
  2. Step 2: Convert to fraction form
    217,486,987.80/326,230,481.70 = 131,490,648.60/x
  3. Step 3: Cross multiply
    217,486,987.80x = 326,230,481.70 × 131,490,648.60
  4. Step 4: Simplify right side
    217,486,987.80x = 42,896,257,631,823,424
  5. Step 5: Solve for x
    x = 42,896,257,631,823,424/217,486,987.80
  6. Step 6: Final answer
    x = 197,235,972.90

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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.