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Finding the Fourth Proportional to 281,273.62, 388,142.68 and 153,924.60

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Solution

The fourth proportional to 281,273.62, 388,142.68 and 153,924.60 is: 212,407.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,273.62 : 388,142.68 = 153,924.60 : x
  2. Step 2: Convert to fraction form
    281,273.62/388,142.68 = 153,924.60/x
  3. Step 3: Cross multiply
    281,273.62x = 388,142.68 × 153,924.60
  4. Step 4: Simplify right side
    281,273.62x = 59,744,706,761.93
  5. Step 5: Solve for x
    x = 59,744,706,761.93/281,273.62
  6. Step 6: Final answer
    x = 212,407.79

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1.5x scale

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.