Home / 268,938.10-403,421.73-100,502.65

Finding the Fourth Proportional to 268,938.10, 403,421.73 and 100,502.65

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Solution

The fourth proportional to 268,938.10, 403,421.73 and 100,502.65 is: 150,759.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,938.10 : 403,421.73 = 100,502.65 : x
  2. Step 2: Convert to fraction form
    268,938.10/403,421.73 = 100,502.65/x
  3. Step 3: Cross multiply
    268,938.10x = 403,421.73 × 100,502.65
  4. Step 4: Simplify right side
    268,938.10x = 40,544,952,932.58
  5. Step 5: Solve for x
    x = 40,544,952,932.58/268,938.10
  6. Step 6: Final answer
    x = 150,759.42

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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.