Home / 290,789.42-436,184.28-91,125.43

Finding the Fourth Proportional to 290,789.42, 436,184.28 and 91,125.43

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Solution

The fourth proportional to 290,789.42, 436,184.28 and 91,125.43 is: 136,688.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,789.42 : 436,184.28 = 91,125.43 : x
  2. Step 2: Convert to fraction form
    290,789.42/436,184.28 = 91,125.43/x
  3. Step 3: Cross multiply
    290,789.42x = 436,184.28 × 91,125.43
  4. Step 4: Simplify right side
    290,789.42x = 39,747,478,983.78
  5. Step 5: Solve for x
    x = 39,747,478,983.78/290,789.42
  6. Step 6: Final answer
    x = 136,688.19

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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.