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Finding the Fourth Proportional to 275,140.60, 379,772.76 and 162,028.96

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Solution

The fourth proportional to 275,140.60, 379,772.76 and 162,028.96 is: 223,646.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,140.60 : 379,772.76 = 162,028.96 : x
  2. Step 2: Convert to fraction form
    275,140.60/379,772.76 = 162,028.96/x
  3. Step 3: Cross multiply
    275,140.60x = 379,772.76 × 162,028.96
  4. Step 4: Simplify right side
    275,140.60x = 61,534,185,339.13
  5. Step 5: Solve for x
    x = 61,534,185,339.13/275,140.60
  6. Step 6: Final answer
    x = 223,646.33

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1.5x scale

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.