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Finding the Fourth Proportional to 250,498.56, 345,696 and 137,320.32

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Solution

The fourth proportional to 250,498.56, 345,696 and 137,320.32 is: 189,506.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,498.56 : 345,696 = 137,320.32 : x
  2. Step 2: Convert to fraction form
    250,498.56/345,696 = 137,320.32/x
  3. Step 3: Cross multiply
    250,498.56x = 345,696 × 137,320.32
  4. Step 4: Simplify right side
    250,498.56x = 47,471,085,342.72
  5. Step 5: Solve for x
    x = 47,471,085,342.72/250,498.56
  6. Step 6: Final answer
    x = 189,506.42

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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.