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Finding the Fourth Proportional to 279,553.26, 385,759.18 and 158,699.64

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Solution

The fourth proportional to 279,553.26, 385,759.18 and 158,699.64 is: 218,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,553.26 : 385,759.18 = 158,699.64 : x
  2. Step 2: Convert to fraction form
    279,553.26/385,759.18 = 158,699.64/x
  3. Step 3: Cross multiply
    279,553.26x = 385,759.18 × 158,699.64
  4. Step 4: Simplify right side
    279,553.26x = 61,219,842,992.70
  5. Step 5: Solve for x
    x = 61,219,842,992.70/279,553.26
  6. Step 6: Final answer
    x = 218,991.70

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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.