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Finding the Fourth Proportional to 281,573.78, 388,581.48 and 154,249.34

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Solution

The fourth proportional to 281,573.78, 388,581.48 and 154,249.34 is: 212,869.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,573.78 : 388,581.48 = 154,249.34 : x
  2. Step 2: Convert to fraction form
    281,573.78/388,581.48 = 154,249.34/x
  3. Step 3: Cross multiply
    281,573.78x = 388,581.48 × 154,249.34
  4. Step 4: Simplify right side
    281,573.78x = 59,938,434,883.32
  5. Step 5: Solve for x
    x = 59,938,434,883.32/281,573.78
  6. Step 6: Final answer
    x = 212,869.38

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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.