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Finding the Fourth Proportional to 281,593.04, 388,599.80 and 154,268.72

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Solution

The fourth proportional to 281,593.04, 388,599.80 and 154,268.72 is: 212,891.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,593.04 : 388,599.80 = 154,268.72 : x
  2. Step 2: Convert to fraction form
    281,593.04/388,599.80 = 154,268.72/x
  3. Step 3: Cross multiply
    281,593.04x = 388,599.80 × 154,268.72
  4. Step 4: Simplify right side
    281,593.04x = 59,948,793,738.26
  5. Step 5: Solve for x
    x = 59,948,793,738.26/281,593.04
  6. Step 6: Final answer
    x = 212,891.60

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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.