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Finding the Fourth Proportional to 394,681.78, 591,875.69 and 141,893.29

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Solution

The fourth proportional to 394,681.78, 591,875.69 and 141,893.29 is: 212,787.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,681.78 : 591,875.69 = 141,893.29 : x
  2. Step 2: Convert to fraction form
    394,681.78/591,875.69 = 141,893.29/x
  3. Step 3: Cross multiply
    394,681.78x = 591,875.69 × 141,893.29
  4. Step 4: Simplify right side
    394,681.78x = 83,983,185,965.74
  5. Step 5: Solve for x
    x = 83,983,185,965.74/394,681.78
  6. Step 6: Final answer
    x = 212,787.09

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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.