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Finding the Fourth Proportional to 284,571.64, 392,716.79 and 157,255.44

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Solution

The fourth proportional to 284,571.64, 392,716.79 and 157,255.44 is: 217,016.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,571.64 : 392,716.79 = 157,255.44 : x
  2. Step 2: Convert to fraction form
    284,571.64/392,716.79 = 157,255.44/x
  3. Step 3: Cross multiply
    284,571.64x = 392,716.79 × 157,255.44
  4. Step 4: Simplify right side
    284,571.64x = 61,756,851,606.84
  5. Step 5: Solve for x
    x = 61,756,851,606.84/284,571.64
  6. Step 6: Final answer
    x = 217,016.89

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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.