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Finding the Fourth Proportional to 318,354.44, 439,321.96 and 175,111.32

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Solution

The fourth proportional to 318,354.44, 439,321.96 and 175,111.32 is: 241,649.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,354.44 : 439,321.96 = 175,111.32 : x
  2. Step 2: Convert to fraction form
    318,354.44/439,321.96 = 175,111.32/x
  3. Step 3: Cross multiply
    318,354.44x = 439,321.96 × 175,111.32
  4. Step 4: Simplify right side
    318,354.44x = 76,930,248,320.59
  5. Step 5: Solve for x
    x = 76,930,248,320.59/318,354.44
  6. Step 6: Final answer
    x = 241,649.68

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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.