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Finding the Fourth Proportional to 268,717.80, 370,830.15 and 161,288.31

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Solution

The fourth proportional to 268,717.80, 370,830.15 and 161,288.31 is: 222,577.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,717.80 : 370,830.15 = 161,288.31 : x
  2. Step 2: Convert to fraction form
    268,717.80/370,830.15 = 161,288.31/x
  3. Step 3: Cross multiply
    268,717.80x = 370,830.15 × 161,288.31
  4. Step 4: Simplify right side
    268,717.80x = 59,810,569,581.16
  5. Step 5: Solve for x
    x = 59,810,569,581.16/268,717.80
  6. Step 6: Final answer
    x = 222,577.62

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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.