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Finding the Fourth Proportional to 389,464.48, 537,486.06 and 219,694.96

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Solution

The fourth proportional to 389,464.48, 537,486.06 and 219,694.96 is: 303,193.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,464.48 : 537,486.06 = 219,694.96 : x
  2. Step 2: Convert to fraction form
    389,464.48/537,486.06 = 219,694.96/x
  3. Step 3: Cross multiply
    389,464.48x = 537,486.06 × 219,694.96
  4. Step 4: Simplify right side
    389,464.48x = 118,082,978,452.26
  5. Step 5: Solve for x
    x = 118,082,978,452.26/389,464.48
  6. Step 6: Final answer
    x = 303,193.19

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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.