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Finding the Fourth Proportional to 389,805.38, 584,708.09 and 94,317.38

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Solution

The fourth proportional to 389,805.38, 584,708.09 and 94,317.38 is: 141,476.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,805.38 : 584,708.09 = 94,317.38 : x
  2. Step 2: Convert to fraction form
    389,805.38/584,708.09 = 94,317.38/x
  3. Step 3: Cross multiply
    389,805.38x = 584,708.09 × 94,317.38
  4. Step 4: Simplify right side
    389,805.38x = 55,148,131,718.48
  5. Step 5: Solve for x
    x = 55,148,131,718.48/389,805.38
  6. Step 6: Final answer
    x = 141,476.07

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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.