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Finding the Fourth Proportional to 389,835.95, 584,958.83 and 276,713.78

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Solution

The fourth proportional to 389,835.95, 584,958.83 and 276,713.78 is: 415,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,835.95 : 584,958.83 = 276,713.78 : x
  2. Step 2: Convert to fraction form
    389,835.95/584,958.83 = 276,713.78/x
  3. Step 3: Cross multiply
    389,835.95x = 584,958.83 × 276,713.78
  4. Step 4: Simplify right side
    389,835.95x = 161,866,164,685.31
  5. Step 5: Solve for x
    x = 161,866,164,685.31/389,835.95
  6. Step 6: Final answer
    x = 415,216.11

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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.