Home / 279,628.10-419,442.15-92,639.60

Finding the Fourth Proportional to 279,628.10, 419,442.15 and 92,639.60

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Solution

The fourth proportional to 279,628.10, 419,442.15 and 92,639.60 is: 138,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,628.10 : 419,442.15 = 92,639.60 : x
  2. Step 2: Convert to fraction form
    279,628.10/419,442.15 = 92,639.60/x
  3. Step 3: Cross multiply
    279,628.10x = 419,442.15 × 92,639.60
  4. Step 4: Simplify right side
    279,628.10x = 38,856,952,999.14
  5. Step 5: Solve for x
    x = 38,856,952,999.14/279,628.10
  6. Step 6: Final answer
    x = 138,959.40

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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.