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Finding the Fourth Proportional to 268,119.64, 369,963.96 and 154,920.52

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Solution

The fourth proportional to 268,119.64, 369,963.96 and 154,920.52 is: 213,766.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,119.64 : 369,963.96 = 154,920.52 : x
  2. Step 2: Convert to fraction form
    268,119.64/369,963.96 = 154,920.52/x
  3. Step 3: Cross multiply
    268,119.64x = 369,963.96 × 154,920.52
  4. Step 4: Simplify right side
    268,119.64x = 57,315,009,064.46
  5. Step 5: Solve for x
    x = 57,315,009,064.46/268,119.64
  6. Step 6: Final answer
    x = 213,766.54

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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.