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Finding the Fourth Proportional to 279,146.25, 385,057.67 and 165,962.25

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Solution

The fourth proportional to 279,146.25, 385,057.67 and 165,962.25 is: 228,930.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,146.25 : 385,057.67 = 165,962.25 : x
  2. Step 2: Convert to fraction form
    279,146.25/385,057.67 = 165,962.25/x
  3. Step 3: Cross multiply
    279,146.25x = 385,057.67 × 165,962.25
  4. Step 4: Simplify right side
    279,146.25x = 63,905,036,463.15
  5. Step 5: Solve for x
    x = 63,905,036,463.15/279,146.25
  6. Step 6: Final answer
    x = 228,930.31

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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.