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Finding the Fourth Proportional to 250,615, 345,848.70 and 137,437.75

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Solution

The fourth proportional to 250,615, 345,848.70 and 137,437.75 is: 189,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,615 : 345,848.70 = 137,437.75 : x
  2. Step 2: Convert to fraction form
    250,615/345,848.70 = 137,437.75/x
  3. Step 3: Cross multiply
    250,615x = 345,848.70 × 137,437.75
  4. Step 4: Simplify right side
    250,615x = 47,532,667,168.43
  5. Step 5: Solve for x
    x = 47,532,667,168.43/250,615
  6. Step 6: Final answer
    x = 189,664.10

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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.