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Finding the Fourth Proportional to 253,064.43, 379,702.15 and 111,011.66

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Solution

The fourth proportional to 253,064.43, 379,702.15 and 111,011.66 is: 166,563.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,064.43 : 379,702.15 = 111,011.66 : x
  2. Step 2: Convert to fraction form
    253,064.43/379,702.15 = 111,011.66/x
  3. Step 3: Cross multiply
    253,064.43x = 379,702.15 × 111,011.66
  4. Step 4: Simplify right side
    253,064.43x = 42,151,365,224.91
  5. Step 5: Solve for x
    x = 42,151,365,224.91/253,064.43
  6. Step 6: Final answer
    x = 166,563.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.