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Finding the Fourth Proportional to 331,403.60, 497,105.40 and 154,256.60

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Solution

The fourth proportional to 331,403.60, 497,105.40 and 154,256.60 is: 231,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,403.60 : 497,105.40 = 154,256.60 : x
  2. Step 2: Convert to fraction form
    331,403.60/497,105.40 = 154,256.60/x
  3. Step 3: Cross multiply
    331,403.60x = 497,105.40 × 154,256.60
  4. Step 4: Simplify right side
    331,403.60x = 76,681,788,845.64
  5. Step 5: Solve for x
    x = 76,681,788,845.64/331,403.60
  6. Step 6: Final answer
    x = 231,384.90

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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.