Home / 278,977.88-385,031.58-170,145.38

Finding the Fourth Proportional to 278,977.88, 385,031.58 and 170,145.38

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Solution

The fourth proportional to 278,977.88, 385,031.58 and 170,145.38 is: 234,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,977.88 : 385,031.58 = 170,145.38 : x
  2. Step 2: Convert to fraction form
    278,977.88/385,031.58 = 170,145.38/x
  3. Step 3: Cross multiply
    278,977.88x = 385,031.58 × 170,145.38
  4. Step 4: Simplify right side
    278,977.88x = 65,511,344,491.10
  5. Step 5: Solve for x
    x = 65,511,344,491.10/278,977.88
  6. Step 6: Final answer
    x = 234,826.30

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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.