Home / 281,043.84-387,849.74-153,719.43

Finding the Fourth Proportional to 281,043.84, 387,849.74 and 153,719.43

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Solution

The fourth proportional to 281,043.84, 387,849.74 and 153,719.43 is: 212,137.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,043.84 : 387,849.74 = 153,719.43 : x
  2. Step 2: Convert to fraction form
    281,043.84/387,849.74 = 153,719.43/x
  3. Step 3: Cross multiply
    281,043.84x = 387,849.74 × 153,719.43
  4. Step 4: Simplify right side
    281,043.84x = 59,620,040,189.85
  5. Step 5: Solve for x
    x = 59,620,040,189.85/281,043.84
  6. Step 6: Final answer
    x = 212,137.87

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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.