Home / 284,865.72-393,098.66-155,778.56

Finding the Fourth Proportional to 284,865.72, 393,098.66 and 155,778.56

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Solution

The fourth proportional to 284,865.72, 393,098.66 and 155,778.56 is: 214,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,865.72 : 393,098.66 = 155,778.56 : x
  2. Step 2: Convert to fraction form
    284,865.72/393,098.66 = 155,778.56/x
  3. Step 3: Cross multiply
    284,865.72x = 393,098.66 × 155,778.56
  4. Step 4: Simplify right side
    284,865.72x = 61,236,343,192.73
  5. Step 5: Solve for x
    x = 61,236,343,192.73/284,865.72
  6. Step 6: Final answer
    x = 214,965.64

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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.