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Finding the Fourth Proportional to 392,681.26, 541,885.26 and 239,974.84

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Solution

The fourth proportional to 392,681.26, 541,885.26 and 239,974.84 is: 331,156.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,681.26 : 541,885.26 = 239,974.84 : x
  2. Step 2: Convert to fraction form
    392,681.26/541,885.26 = 239,974.84/x
  3. Step 3: Cross multiply
    392,681.26x = 541,885.26 × 239,974.84
  4. Step 4: Simplify right side
    392,681.26x = 130,038,828,566.86
  5. Step 5: Solve for x
    x = 130,038,828,566.86/392,681.26
  6. Step 6: Final answer
    x = 331,156.19

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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.