Home / 280,289.16-386,809.74-159,441.66

Finding the Fourth Proportional to 280,289.16, 386,809.74 and 159,441.66

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Solution

The fourth proportional to 280,289.16, 386,809.74 and 159,441.66 is: 220,035.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,289.16 : 386,809.74 = 159,441.66 : x
  2. Step 2: Convert to fraction form
    280,289.16/386,809.74 = 159,441.66/x
  3. Step 3: Cross multiply
    280,289.16x = 386,809.74 × 159,441.66
  4. Step 4: Simplify right side
    280,289.16x = 61,673,587,049.77
  5. Step 5: Solve for x
    x = 61,673,587,049.77/280,289.16
  6. Step 6: Final answer
    x = 220,035.58

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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.