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Finding the Fourth Proportional to 318,107.70, 438,977.52 and 174,866.72

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Solution

The fourth proportional to 318,107.70, 438,977.52 and 174,866.72 is: 241,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,107.70 : 438,977.52 = 174,866.72 : x
  2. Step 2: Convert to fraction form
    318,107.70/438,977.52 = 174,866.72/x
  3. Step 3: Cross multiply
    318,107.70x = 438,977.52 × 174,866.72
  4. Step 4: Simplify right side
    318,107.70x = 76,762,556,881.25
  5. Step 5: Solve for x
    x = 76,762,556,881.25/318,107.70
  6. Step 6: Final answer
    x = 241,309.96

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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.