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Finding the Fourth Proportional to 392,675.40, 541,877.63 and 239,969.13

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Solution

The fourth proportional to 392,675.40, 541,877.63 and 239,969.13 is: 331,148.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,675.40 : 541,877.63 = 239,969.13 : x
  2. Step 2: Convert to fraction form
    392,675.40/541,877.63 = 239,969.13/x
  3. Step 3: Cross multiply
    392,675.40x = 541,877.63 × 239,969.13
  4. Step 4: Simplify right side
    392,675.40x = 130,033,903,437.56
  5. Step 5: Solve for x
    x = 130,033,903,437.56/392,675.40
  6. Step 6: Final answer
    x = 331,148.59

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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.