Home / 279,108,071.82-385,162,099.14-153,659,015.67

Finding the Fourth Proportional to 279,108,071.82, 385,162,099.14 and 153,659,015.67

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Solution

The fourth proportional to 279,108,071.82, 385,162,099.14 and 153,659,015.67 is: 212,045,565.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,108,071.82 : 385,162,099.14 = 153,659,015.67 : x
  2. Step 2: Convert to fraction form
    279,108,071.82/385,162,099.14 = 153,659,015.67/x
  3. Step 3: Cross multiply
    279,108,071.82x = 385,162,099.14 × 153,659,015.67
  4. Step 4: Simplify right side
    279,108,071.82x = 59,183,629,027,243,344
  5. Step 5: Solve for x
    x = 59,183,629,027,243,344/279,108,071.82
  6. Step 6: Final answer
    x = 212,045,565.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.