Home / 285,580.72-394,111.56-172,381.36

Finding the Fourth Proportional to 285,580.72, 394,111.56 and 172,381.36

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Solution

The fourth proportional to 285,580.72, 394,111.56 and 172,381.36 is: 237,892.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,580.72 : 394,111.56 = 172,381.36 : x
  2. Step 2: Convert to fraction form
    285,580.72/394,111.56 = 172,381.36/x
  3. Step 3: Cross multiply
    285,580.72x = 394,111.56 × 172,381.36
  4. Step 4: Simplify right side
    285,580.72x = 67,937,486,704.52
  5. Step 5: Solve for x
    x = 67,937,486,704.52/285,580.72
  6. Step 6: Final answer
    x = 237,892.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.