Home / 318,889,807.92-440,067,940.44-172,212,091.92

Finding the Fourth Proportional to 318,889,807.92, 440,067,940.44 and 172,212,091.92

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Solution

The fourth proportional to 318,889,807.92, 440,067,940.44 and 172,212,091.92 is: 237,652,689.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,889,807.92 : 440,067,940.44 = 172,212,091.92 : x
  2. Step 2: Convert to fraction form
    318,889,807.92/440,067,940.44 = 172,212,091.92/x
  3. Step 3: Cross multiply
    318,889,807.92x = 440,067,940.44 × 172,212,091.92
  4. Step 4: Simplify right side
    318,889,807.92x = 75,785,020,610,098,352
  5. Step 5: Solve for x
    x = 75,785,020,610,098,352/318,889,807.92
  6. Step 6: Final answer
    x = 237,652,689.83

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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.