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Finding the Fourth Proportional to 279,005.92, 385,063.60 and 158,166.88

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Solution

The fourth proportional to 279,005.92, 385,063.60 and 158,166.88 is: 218,290.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,005.92 : 385,063.60 = 158,166.88 : x
  2. Step 2: Convert to fraction form
    279,005.92/385,063.60 = 158,166.88/x
  3. Step 3: Cross multiply
    279,005.92x = 385,063.60 × 158,166.88
  4. Step 4: Simplify right side
    279,005.92x = 60,904,308,213.57
  5. Step 5: Solve for x
    x = 60,904,308,213.57/279,005.92
  6. Step 6: Final answer
    x = 218,290.38

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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.