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Finding the Fourth Proportional to 281,649.80, 422,475.32 and 68,416.76

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Solution

The fourth proportional to 281,649.80, 422,475.32 and 68,416.76 is: 102,625.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,649.80 : 422,475.32 = 68,416.76 : x
  2. Step 2: Convert to fraction form
    281,649.80/422,475.32 = 68,416.76/x
  3. Step 3: Cross multiply
    281,649.80x = 422,475.32 × 68,416.76
  4. Step 4: Simplify right side
    281,649.80x = 28,904,392,574.36
  5. Step 5: Solve for x
    x = 28,904,392,574.36/281,649.80
  6. Step 6: Final answer
    x = 102,625.29

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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.