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Finding the Fourth Proportional to 331,677.76, 497,361.12 and 121,168.48

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Solution

The fourth proportional to 331,677.76, 497,361.12 and 121,168.48 is: 181,695.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,677.76 : 497,361.12 = 121,168.48 : x
  2. Step 2: Convert to fraction form
    331,677.76/497,361.12 = 121,168.48/x
  3. Step 3: Cross multiply
    331,677.76x = 497,361.12 × 121,168.48
  4. Step 4: Simplify right side
    331,677.76x = 60,264,490,921.50
  5. Step 5: Solve for x
    x = 60,264,490,921.50/331,677.76
  6. Step 6: Final answer
    x = 181,695.91

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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.