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Finding the Fourth Proportional to 331,666.40, 497,402.40 and 154,130.60

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Solution

The fourth proportional to 331,666.40, 497,402.40 and 154,130.60 is: 231,150.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,666.40 : 497,402.40 = 154,130.60 : x
  2. Step 2: Convert to fraction form
    331,666.40/497,402.40 = 154,130.60/x
  3. Step 3: Cross multiply
    331,666.40x = 497,402.40 × 154,130.60
  4. Step 4: Simplify right side
    331,666.40x = 76,664,930,353.44
  5. Step 5: Solve for x
    x = 76,664,930,353.44/331,666.40
  6. Step 6: Final answer
    x = 231,150.73

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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.