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Finding the Fourth Proportional to 443,898.63, 612,580.19 and 239,949

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Solution

The fourth proportional to 443,898.63, 612,580.19 and 239,949 is: 331,129.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,898.63 : 612,580.19 = 239,949 : x
  2. Step 2: Convert to fraction form
    443,898.63/612,580.19 = 239,949/x
  3. Step 3: Cross multiply
    443,898.63x = 612,580.19 × 239,949
  4. Step 4: Simplify right side
    443,898.63x = 146,988,002,810.57
  5. Step 5: Solve for x
    x = 146,988,002,810.57/443,898.63
  6. Step 6: Final answer
    x = 331,129.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.