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Finding the Fourth Proportional to 281,350.92, 388,264.28 and 154,026.53

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Solution

The fourth proportional to 281,350.92, 388,264.28 and 154,026.53 is: 212,556.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,350.92 : 388,264.28 = 154,026.53 : x
  2. Step 2: Convert to fraction form
    281,350.92/388,264.28 = 154,026.53/x
  3. Step 3: Cross multiply
    281,350.92x = 388,264.28 × 154,026.53
  4. Step 4: Simplify right side
    281,350.92x = 59,802,997,059.89
  5. Step 5: Solve for x
    x = 59,802,997,059.89/281,350.92
  6. Step 6: Final answer
    x = 212,556.61

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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.