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Finding the Fourth Proportional to 388,438,896.99, 582,265,658.69 and 167,254,481.42

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Solution

The fourth proportional to 388,438,896.99, 582,265,658.69 and 167,254,481.42 is: 250,712,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,438,896.99 : 582,265,658.69 = 167,254,481.42 : x
  2. Step 2: Convert to fraction form
    388,438,896.99/582,265,658.69 = 167,254,481.42/x
  3. Step 3: Cross multiply
    388,438,896.99x = 582,265,658.69 × 167,254,481.42
  4. Step 4: Simplify right side
    388,438,896.99x = 97,386,540,789,123,056
  5. Step 5: Solve for x
    x = 97,386,540,789,123,056/388,438,896.99
  6. Step 6: Final answer
    x = 250,712,638.57

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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.