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Finding the Fourth Proportional to 392,955.66, 589,548.51 and 126,710.82

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Solution

The fourth proportional to 392,955.66, 589,548.51 and 126,710.82 is: 190,103.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,955.66 : 589,548.51 = 126,710.82 : x
  2. Step 2: Convert to fraction form
    392,955.66/589,548.51 = 126,710.82/x
  3. Step 3: Cross multiply
    392,955.66x = 589,548.51 × 126,710.82
  4. Step 4: Simplify right side
    392,955.66x = 74,702,175,131.88
  5. Step 5: Solve for x
    x = 74,702,175,131.88/392,955.66
  6. Step 6: Final answer
    x = 190,103.32

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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.