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Finding the Fourth Proportional to 389,799.94, 537,923.92 and 210,951.94

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Solution

The fourth proportional to 389,799.94, 537,923.92 and 210,951.94 is: 291,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,799.94 : 537,923.92 = 210,951.94 : x
  2. Step 2: Convert to fraction form
    389,799.94/537,923.92 = 210,951.94/x
  3. Step 3: Cross multiply
    389,799.94x = 537,923.92 × 210,951.94
  4. Step 4: Simplify right side
    389,799.94x = 113,476,092,624.22
  5. Step 5: Solve for x
    x = 113,476,092,624.22/389,799.94
  6. Step 6: Final answer
    x = 291,113.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.