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Finding the Fourth Proportional to 340,781.70, 511,172.47 and 91,463.70

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Solution

The fourth proportional to 340,781.70, 511,172.47 and 91,463.70 is: 137,195.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,781.70 : 511,172.47 = 91,463.70 : x
  2. Step 2: Convert to fraction form
    340,781.70/511,172.47 = 91,463.70/x
  3. Step 3: Cross multiply
    340,781.70x = 511,172.47 × 91,463.70
  4. Step 4: Simplify right side
    340,781.70x = 46,753,725,444.34
  5. Step 5: Solve for x
    x = 46,753,725,444.34/340,781.70
  6. Step 6: Final answer
    x = 137,195.53

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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.