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Finding the Fourth Proportional to 331,605.40, 497,580.90 and 144,635.80

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Solution

The fourth proportional to 331,605.40, 497,580.90 and 144,635.80 is: 217,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,605.40 : 497,580.90 = 144,635.80 : x
  2. Step 2: Convert to fraction form
    331,605.40/497,580.90 = 144,635.80/x
  3. Step 3: Cross multiply
    331,605.40x = 497,580.90 × 144,635.80
  4. Step 4: Simplify right side
    331,605.40x = 71,968,011,536.22
  5. Step 5: Solve for x
    x = 71,968,011,536.22/331,605.40
  6. Step 6: Final answer
    x = 217,029.07

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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.