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Finding the Fourth Proportional to 328,498.88, 492,835.91 and 103,863.53

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Solution

The fourth proportional to 328,498.88, 492,835.91 and 103,863.53 is: 155,822.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,498.88 : 492,835.91 = 103,863.53 : x
  2. Step 2: Convert to fraction form
    328,498.88/492,835.91 = 103,863.53/x
  3. Step 3: Cross multiply
    328,498.88x = 492,835.91 × 103,863.53
  4. Step 4: Simplify right side
    328,498.88x = 51,187,677,323.36
  5. Step 5: Solve for x
    x = 51,187,677,323.36/328,498.88
  6. Step 6: Final answer
    x = 155,822.99

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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.