Home / 290,984.16-436,494.69-91,312.43

Finding the Fourth Proportional to 290,984.16, 436,494.69 and 91,312.43

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Solution

The fourth proportional to 290,984.16, 436,494.69 and 91,312.43 is: 136,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,984.16 : 436,494.69 = 91,312.43 : x
  2. Step 2: Convert to fraction form
    290,984.16/436,494.69 = 91,312.43/x
  3. Step 3: Cross multiply
    290,984.16x = 436,494.69 × 91,312.43
  4. Step 4: Simplify right side
    290,984.16x = 39,857,388,643.52
  5. Step 5: Solve for x
    x = 39,857,388,643.52/290,984.16
  6. Step 6: Final answer
    x = 136,974.43

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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.