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Finding the Fourth Proportional to 389,482.38, 537,487.31 and 210,634.38

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Solution

The fourth proportional to 389,482.38, 537,487.31 and 210,634.38 is: 290,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,482.38 : 537,487.31 = 210,634.38 : x
  2. Step 2: Convert to fraction form
    389,482.38/537,487.31 = 210,634.38/x
  3. Step 3: Cross multiply
    389,482.38x = 537,487.31 × 210,634.38
  4. Step 4: Simplify right side
    389,482.38x = 113,213,306,299.72
  5. Step 5: Solve for x
    x = 113,213,306,299.72/389,482.38
  6. Step 6: Final answer
    x = 290,676.32

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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.