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Finding the Fourth Proportional to 389,473.25, 537,473.09 and 210,625.25

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Solution

The fourth proportional to 389,473.25, 537,473.09 and 210,625.25 is: 290,662.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,473.25 : 537,473.09 = 210,625.25 : x
  2. Step 2: Convert to fraction form
    389,473.25/537,473.09 = 210,625.25/x
  3. Step 3: Cross multiply
    389,473.25x = 537,473.09 × 210,625.25
  4. Step 4: Simplify right side
    389,473.25x = 113,205,402,896.40
  5. Step 5: Solve for x
    x = 113,205,402,896.40/389,473.25
  6. Step 6: Final answer
    x = 290,662.85

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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.