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Finding the Fourth Proportional to 331,695.60, 497,538.81 and 198,612.60

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Solution

The fourth proportional to 331,695.60, 497,538.81 and 198,612.60 is: 297,916.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,695.60 : 497,538.81 = 198,612.60 : x
  2. Step 2: Convert to fraction form
    331,695.60/497,538.81 = 198,612.60/x
  3. Step 3: Cross multiply
    331,695.60x = 497,538.81 × 198,612.60
  4. Step 4: Simplify right side
    331,695.60x = 98,817,476,655.01
  5. Step 5: Solve for x
    x = 98,817,476,655.01/331,695.60
  6. Step 6: Final answer
    x = 297,916.15

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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.