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Finding the Fourth Proportional to 328,393.07, 492,610.37 and 138,818.10

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Solution

The fourth proportional to 328,393.07, 492,610.37 and 138,818.10 is: 208,235.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,393.07 : 492,610.37 = 138,818.10 : x
  2. Step 2: Convert to fraction form
    328,393.07/492,610.37 = 138,818.10/x
  3. Step 3: Cross multiply
    328,393.07x = 492,610.37 × 138,818.10
  4. Step 4: Simplify right side
    328,393.07x = 68,383,234,909.61
  5. Step 5: Solve for x
    x = 68,383,234,909.61/328,393.07
  6. Step 6: Final answer
    x = 208,235.93

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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.