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Finding the Fourth Proportional to 667,567.02, 921,238.74 and 361,649.28

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Solution

The fourth proportional to 667,567.02, 921,238.74 and 361,649.28 is: 499,073.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,567.02 : 921,238.74 = 361,649.28 : x
  2. Step 2: Convert to fraction form
    667,567.02/921,238.74 = 361,649.28/x
  3. Step 3: Cross multiply
    667,567.02x = 921,238.74 × 361,649.28
  4. Step 4: Simplify right side
    667,567.02x = 333,165,327,029.11
  5. Step 5: Solve for x
    x = 333,165,327,029.11/667,567.02
  6. Step 6: Final answer
    x = 499,073.98

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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.