Home / 290,822.42-436,233.66-91,142.78

Finding the Fourth Proportional to 290,822.42, 436,233.66 and 91,142.78

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Solution

The fourth proportional to 290,822.42, 436,233.66 and 91,142.78 is: 136,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,822.42 : 436,233.66 = 91,142.78 : x
  2. Step 2: Convert to fraction form
    290,822.42/436,233.66 = 91,142.78/x
  3. Step 3: Cross multiply
    290,822.42x = 436,233.66 × 91,142.78
  4. Step 4: Simplify right side
    290,822.42x = 39,759,548,501.97
  5. Step 5: Solve for x
    x = 39,759,548,501.97/290,822.42
  6. Step 6: Final answer
    x = 136,714.18

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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.