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Finding the Fourth Proportional to 318,155.38, 439,057.38 and 174,916.44

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Solution

The fourth proportional to 318,155.38, 439,057.38 and 174,916.44 is: 241,386.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,155.38 : 439,057.38 = 174,916.44 : x
  2. Step 2: Convert to fraction form
    318,155.38/439,057.38 = 174,916.44/x
  3. Step 3: Cross multiply
    318,155.38x = 439,057.38 × 174,916.44
  4. Step 4: Simplify right side
    318,155.38x = 76,798,353,865.33
  5. Step 5: Solve for x
    x = 76,798,353,865.33/318,155.38
  6. Step 6: Final answer
    x = 241,386.31

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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.