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Finding the Fourth Proportional to 279,240, 385,348.32 and 166,060.32

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Solution

The fourth proportional to 279,240, 385,348.32 and 166,060.32 is: 229,161.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,240 : 385,348.32 = 166,060.32 : x
  2. Step 2: Convert to fraction form
    279,240/385,348.32 = 166,060.32/x
  3. Step 3: Cross multiply
    279,240x = 385,348.32 × 166,060.32
  4. Step 4: Simplify right side
    279,240x = 63,991,065,330.66
  5. Step 5: Solve for x
    x = 63,991,065,330.66/279,240
  6. Step 6: Final answer
    x = 229,161.53

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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.