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Finding the Fourth Proportional to 280,179.78, 386,632.34 and 159,350.46

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Solution

The fourth proportional to 280,179.78, 386,632.34 and 159,350.46 is: 219,894.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,179.78 : 386,632.34 = 159,350.46 : x
  2. Step 2: Convert to fraction form
    280,179.78/386,632.34 = 159,350.46/x
  3. Step 3: Cross multiply
    280,179.78x = 386,632.34 × 159,350.46
  4. Step 4: Simplify right side
    280,179.78x = 61,610,041,229.88
  5. Step 5: Solve for x
    x = 61,610,041,229.88/280,179.78
  6. Step 6: Final answer
    x = 219,894.67

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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.