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Finding the Fourth Proportional to 281,578.29, 388,587.69 and 154,253.85

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Solution

The fourth proportional to 281,578.29, 388,587.69 and 154,253.85 is: 212,875.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,578.29 : 388,587.69 = 154,253.85 : x
  2. Step 2: Convert to fraction form
    281,578.29/388,587.69 = 154,253.85/x
  3. Step 3: Cross multiply
    281,578.29x = 388,587.69 × 154,253.85
  4. Step 4: Simplify right side
    281,578.29x = 59,941,147,245.11
  5. Step 5: Solve for x
    x = 59,941,147,245.11/281,578.29
  6. Step 6: Final answer
    x = 212,875.60

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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.