Home / 311,813,757.72-430,297,766.10-172,581,538.68

Finding the Fourth Proportional to 311,813,757.72, 430,297,766.10 and 172,581,538.68

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Solution

The fourth proportional to 311,813,757.72, 430,297,766.10 and 172,581,538.68 is: 238,159,634.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,813,757.72 : 430,297,766.10 = 172,581,538.68 : x
  2. Step 2: Convert to fraction form
    311,813,757.72/430,297,766.10 = 172,581,538.68/x
  3. Step 3: Cross multiply
    311,813,757.72x = 430,297,766.10 × 172,581,538.68
  4. Step 4: Simplify right side
    311,813,757.72x = 74,261,450,564,104,752
  5. Step 5: Solve for x
    x = 74,261,450,564,104,752/311,813,757.72
  6. Step 6: Final answer
    x = 238,159,634.48

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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.