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Finding the Fourth Proportional to 275,617.52, 380,673.18 and 220,618.32

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Solution

The fourth proportional to 275,617.52, 380,673.18 and 220,618.32 is: 304,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,617.52 : 380,673.18 = 220,618.32 : x
  2. Step 2: Convert to fraction form
    275,617.52/380,673.18 = 220,618.32/x
  3. Step 3: Cross multiply
    275,617.52x = 380,673.18 × 220,618.32
  4. Step 4: Simplify right side
    275,617.52x = 83,983,476,337.57
  5. Step 5: Solve for x
    x = 83,983,476,337.57/275,617.52
  6. Step 6: Final answer
    x = 304,710.22

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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.