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Finding the Fourth Proportional to 382,757.21, 572,731.63 and 319,420.98

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Solution

The fourth proportional to 382,757.21, 572,731.63 and 319,420.98 is: 477,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,757.21 : 572,731.63 = 319,420.98 : x
  2. Step 2: Convert to fraction form
    382,757.21/572,731.63 = 319,420.98/x
  3. Step 3: Cross multiply
    382,757.21x = 572,731.63 × 319,420.98
  4. Step 4: Simplify right side
    382,757.21x = 182,942,496,934.49
  5. Step 5: Solve for x
    x = 182,942,496,934.49/382,757.21
  6. Step 6: Final answer
    x = 477,959.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.