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Finding the Fourth Proportional to 345,328.48, 517,991.92 and 108,691.84

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Solution

The fourth proportional to 345,328.48, 517,991.92 and 108,691.84 is: 163,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,328.48 : 517,991.92 = 108,691.84 : x
  2. Step 2: Convert to fraction form
    345,328.48/517,991.92 = 108,691.84/x
  3. Step 3: Cross multiply
    345,328.48x = 517,991.92 × 108,691.84
  4. Step 4: Simplify right side
    345,328.48x = 56,301,494,889.93
  5. Step 5: Solve for x
    x = 56,301,494,889.93/345,328.48
  6. Step 6: Final answer
    x = 163,037.51

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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.