Home / 290,808.12-436,211.52-91,143.72

Finding the Fourth Proportional to 290,808.12, 436,211.52 and 91,143.72

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Solution

The fourth proportional to 290,808.12, 436,211.52 and 91,143.72 is: 136,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,808.12 : 436,211.52 = 91,143.72 : x
  2. Step 2: Convert to fraction form
    290,808.12/436,211.52 = 91,143.72/x
  3. Step 3: Cross multiply
    290,808.12x = 436,211.52 × 91,143.72
  4. Step 4: Simplify right side
    290,808.12x = 39,757,940,639.65
  5. Step 5: Solve for x
    x = 39,757,940,639.65/290,808.12
  6. Step 6: Final answer
    x = 136,715.37

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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.