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Finding the Fourth Proportional to 331,384.70, 497,206.65 and 121,043.90

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Solution

The fourth proportional to 331,384.70, 497,206.65 and 121,043.90 is: 181,613.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,384.70 : 497,206.65 = 121,043.90 : x
  2. Step 2: Convert to fraction form
    331,384.70/497,206.65 = 121,043.90/x
  3. Step 3: Cross multiply
    331,384.70x = 497,206.65 × 121,043.90
  4. Step 4: Simplify right side
    331,384.70x = 60,183,832,021.94
  5. Step 5: Solve for x
    x = 60,183,832,021.94/331,384.70
  6. Step 6: Final answer
    x = 181,613.19

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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.