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Finding the Fourth Proportional to 392,858.76, 542,119.56 and 231,676.86

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Solution

The fourth proportional to 392,858.76, 542,119.56 and 231,676.86 is: 319,699.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,858.76 : 542,119.56 = 231,676.86 : x
  2. Step 2: Convert to fraction form
    392,858.76/542,119.56 = 231,676.86/x
  3. Step 3: Cross multiply
    392,858.76x = 542,119.56 × 231,676.86
  4. Step 4: Simplify right side
    392,858.76x = 125,596,557,405.38
  5. Step 5: Solve for x
    x = 125,596,557,405.38/392,858.76
  6. Step 6: Final answer
    x = 319,699.01

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1.5x scale

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.