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Finding the Fourth Proportional to 389,433.42, 537,418.08 and 210,585.42

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Solution

The fourth proportional to 389,433.42, 537,418.08 and 210,585.42 is: 290,607.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,433.42 : 537,418.08 = 210,585.42 : x
  2. Step 2: Convert to fraction form
    389,433.42/537,418.08 = 210,585.42/x
  3. Step 3: Cross multiply
    389,433.42x = 537,418.08 × 210,585.42
  4. Step 4: Simplify right side
    389,433.42x = 113,172,412,092.39
  5. Step 5: Solve for x
    x = 113,172,412,092.39/389,433.42
  6. Step 6: Final answer
    x = 290,607.86

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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.