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Finding the Fourth Proportional to 279,110.50, 385,160.82 and 158,259.98

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Solution

The fourth proportional to 279,110.50, 385,160.82 and 158,259.98 is: 218,392.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,110.50 : 385,160.82 = 158,259.98 : x
  2. Step 2: Convert to fraction form
    279,110.50/385,160.82 = 158,259.98/x
  3. Step 3: Cross multiply
    279,110.50x = 385,160.82 × 158,259.98
  4. Step 4: Simplify right side
    279,110.50x = 60,955,543,669.98
  5. Step 5: Solve for x
    x = 60,955,543,669.98/279,110.50
  6. Step 6: Final answer
    x = 218,392.16

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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.