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Finding the Fourth Proportional to 331,610.40, 497,588.40 and 144,640.80

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Solution

The fourth proportional to 331,610.40, 497,588.40 and 144,640.80 is: 217,036.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,610.40 : 497,588.40 = 144,640.80 : x
  2. Step 2: Convert to fraction form
    331,610.40/497,588.40 = 144,640.80/x
  3. Step 3: Cross multiply
    331,610.40x = 497,588.40 × 144,640.80
  4. Step 4: Simplify right side
    331,610.40x = 71,971,584,246.72
  5. Step 5: Solve for x
    x = 71,971,584,246.72/331,610.40
  6. Step 6: Final answer
    x = 217,036.57

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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.