Home / 280,087.65-386,454.45-159,219.36

Finding the Fourth Proportional to 280,087.65, 386,454.45 and 159,219.36

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Solution

The fourth proportional to 280,087.65, 386,454.45 and 159,219.36 is: 219,684.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,087.65 : 386,454.45 = 159,219.36 : x
  2. Step 2: Convert to fraction form
    280,087.65/386,454.45 = 159,219.36/x
  3. Step 3: Cross multiply
    280,087.65x = 386,454.45 × 159,219.36
  4. Step 4: Simplify right side
    280,087.65x = 61,531,030,198.15
  5. Step 5: Solve for x
    x = 61,531,030,198.15/280,087.65
  6. Step 6: Final answer
    x = 219,684.91

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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.