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Finding the Fourth Proportional to 250,156.64, 345,212.74 and 136,979.40

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Solution

The fourth proportional to 250,156.64, 345,212.74 and 136,979.40 is: 189,029.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,156.64 : 345,212.74 = 136,979.40 : x
  2. Step 2: Convert to fraction form
    250,156.64/345,212.74 = 136,979.40/x
  3. Step 3: Cross multiply
    250,156.64x = 345,212.74 × 136,979.40
  4. Step 4: Simplify right side
    250,156.64x = 47,287,033,997.56
  5. Step 5: Solve for x
    x = 47,287,033,997.56/250,156.64
  6. Step 6: Final answer
    x = 189,029.70

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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.