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Finding the Fourth Proportional to 223,702.35, 308,714.52 and 126,912.75

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Solution

The fourth proportional to 223,702.35, 308,714.52 and 126,912.75 is: 175,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,702.35 : 308,714.52 = 126,912.75 : x
  2. Step 2: Convert to fraction form
    223,702.35/308,714.52 = 126,912.75/x
  3. Step 3: Cross multiply
    223,702.35x = 308,714.52 × 126,912.75
  4. Step 4: Simplify right side
    223,702.35x = 39,179,808,698.13
  5. Step 5: Solve for x
    x = 39,179,808,698.13/223,702.35
  6. Step 6: Final answer
    x = 175,142.59

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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.