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Finding the Fourth Proportional to 389,799, 537,922.62 and 210,951

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Solution

The fourth proportional to 389,799, 537,922.62 and 210,951 is: 291,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,799 : 537,922.62 = 210,951 : x
  2. Step 2: Convert to fraction form
    389,799/537,922.62 = 210,951/x
  3. Step 3: Cross multiply
    389,799x = 537,922.62 × 210,951
  4. Step 4: Simplify right side
    389,799x = 113,475,314,611.62
  5. Step 5: Solve for x
    x = 113,475,314,611.62/389,799
  6. Step 6: Final answer
    x = 291,112.38

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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.