Home / 377,372.30-521,520.96-309,281.88

Finding the Fourth Proportional to 377,372.30, 521,520.96 and 309,281.88

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Solution

The fourth proportional to 377,372.30, 521,520.96 and 309,281.88 is: 427,421.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,372.30 : 521,520.96 = 309,281.88 : x
  2. Step 2: Convert to fraction form
    377,372.30/521,520.96 = 309,281.88/x
  3. Step 3: Cross multiply
    377,372.30x = 521,520.96 × 309,281.88
  4. Step 4: Simplify right side
    377,372.30x = 161,296,982,968.21
  5. Step 5: Solve for x
    x = 161,296,982,968.21/377,372.30
  6. Step 6: Final answer
    x = 427,421.36

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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.