Home / 311,813,758.72-430,297,767.48-172,581,539.68

Finding the Fourth Proportional to 311,813,758.72, 430,297,767.48 and 172,581,539.68

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Solution

The fourth proportional to 311,813,758.72, 430,297,767.48 and 172,581,539.68 is: 238,159,635.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,813,758.72 : 430,297,767.48 = 172,581,539.68 : x
  2. Step 2: Convert to fraction form
    311,813,758.72/430,297,767.48 = 172,581,539.68/x
  3. Step 3: Cross multiply
    311,813,758.72x = 430,297,767.48 × 172,581,539.68
  4. Step 4: Simplify right side
    311,813,758.72x = 74,261,451,232,565,040
  5. Step 5: Solve for x
    x = 74,261,451,232,565,040/311,813,758.72
  6. Step 6: Final answer
    x = 238,159,635.86

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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.