Home / 281,974.19-389,126.30-154,650.69

Finding the Fourth Proportional to 281,974.19, 389,126.30 and 154,650.69

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Solution

The fourth proportional to 281,974.19, 389,126.30 and 154,650.69 is: 213,419.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,974.19 : 389,126.30 = 154,650.69 : x
  2. Step 2: Convert to fraction form
    281,974.19/389,126.30 = 154,650.69/x
  3. Step 3: Cross multiply
    281,974.19x = 389,126.30 × 154,650.69
  4. Step 4: Simplify right side
    281,974.19x = 60,178,650,018.89
  5. Step 5: Solve for x
    x = 60,178,650,018.89/281,974.19
  6. Step 6: Final answer
    x = 213,419.01

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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.