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Finding the Fourth Proportional to 339,732.01, 509,224.35 and 139,943.43

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Solution

The fourth proportional to 339,732.01, 509,224.35 and 139,943.43 is: 209,761.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,732.01 : 509,224.35 = 139,943.43 : x
  2. Step 2: Convert to fraction form
    339,732.01/509,224.35 = 139,943.43/x
  3. Step 3: Cross multiply
    339,732.01x = 509,224.35 × 139,943.43
  4. Step 4: Simplify right side
    339,732.01x = 71,262,602,178.52
  5. Step 5: Solve for x
    x = 71,262,602,178.52/339,732.01
  6. Step 6: Final answer
    x = 209,761.22

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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.