Home / 258,442.20-387,375.30-100,618.20

Finding the Fourth Proportional to 258,442.20, 387,375.30 and 100,618.20

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Solution

The fourth proportional to 258,442.20, 387,375.30 and 100,618.20 is: 150,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,442.20 : 387,375.30 = 100,618.20 : x
  2. Step 2: Convert to fraction form
    258,442.20/387,375.30 = 100,618.20/x
  3. Step 3: Cross multiply
    258,442.20x = 387,375.30 × 100,618.20
  4. Step 4: Simplify right side
    258,442.20x = 38,977,005,410.46
  5. Step 5: Solve for x
    x = 38,977,005,410.46/258,442.20
  6. Step 6: Final answer
    x = 150,815.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.