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Finding the Fourth Proportional to 275,868.74, 380,686.71 and 161,158.01

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Solution

The fourth proportional to 275,868.74, 380,686.71 and 161,158.01 is: 222,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,868.74 : 380,686.71 = 161,158.01 : x
  2. Step 2: Convert to fraction form
    275,868.74/380,686.71 = 161,158.01/x
  3. Step 3: Cross multiply
    275,868.74x = 380,686.71 × 161,158.01
  4. Step 4: Simplify right side
    275,868.74x = 61,350,710,713.61
  5. Step 5: Solve for x
    x = 61,350,710,713.61/275,868.74
  6. Step 6: Final answer
    x = 222,390.95

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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.