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Finding the Fourth Proportional to 250,710.75, 345,986.64 and 137,533.50

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Solution

The fourth proportional to 250,710.75, 345,986.64 and 137,533.50 is: 189,799.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,710.75 : 345,986.64 = 137,533.50 : x
  2. Step 2: Convert to fraction form
    250,710.75/345,986.64 = 137,533.50/x
  3. Step 3: Cross multiply
    250,710.75x = 345,986.64 × 137,533.50
  4. Step 4: Simplify right side
    250,710.75x = 47,584,753,552.44
  5. Step 5: Solve for x
    x = 47,584,753,552.44/250,710.75
  6. Step 6: Final answer
    x = 189,799.41

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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.