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Finding the Fourth Proportional to 280,480.15, 420,470.13 and 102,945.97

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Solution

The fourth proportional to 280,480.15, 420,470.13 and 102,945.97 is: 154,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,480.15 : 420,470.13 = 102,945.97 : x
  2. Step 2: Convert to fraction form
    280,480.15/420,470.13 = 102,945.97/x
  3. Step 3: Cross multiply
    280,480.15x = 420,470.13 × 102,945.97
  4. Step 4: Simplify right side
    280,480.15x = 43,285,705,388.88
  5. Step 5: Solve for x
    x = 43,285,705,388.88/280,480.15
  6. Step 6: Final answer
    x = 154,327.16

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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.