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Finding the Fourth Proportional to 317,978.26, 438,793.76 and 174,710.62

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Solution

The fourth proportional to 317,978.26, 438,793.76 and 174,710.62 is: 241,091.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,978.26 : 438,793.76 = 174,710.62 : x
  2. Step 2: Convert to fraction form
    317,978.26/438,793.76 = 174,710.62/x
  3. Step 3: Cross multiply
    317,978.26x = 438,793.76 × 174,710.62
  4. Step 4: Simplify right side
    317,978.26x = 76,661,929,864.25
  5. Step 5: Solve for x
    x = 76,661,929,864.25/317,978.26
  6. Step 6: Final answer
    x = 241,091.74

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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.