Home / 318,977.28-478,466.52-299,491.20

Finding the Fourth Proportional to 318,977.28, 478,466.52 and 299,491.20

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Solution

The fourth proportional to 318,977.28, 478,466.52 and 299,491.20 is: 449,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,977.28 : 478,466.52 = 299,491.20 : x
  2. Step 2: Convert to fraction form
    318,977.28/478,466.52 = 299,491.20/x
  3. Step 3: Cross multiply
    318,977.28x = 478,466.52 × 299,491.20
  4. Step 4: Simplify right side
    318,977.28x = 143,296,512,234.62
  5. Step 5: Solve for x
    x = 143,296,512,234.62/318,977.28
  6. Step 6: Final answer
    x = 449,237.36

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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.