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Finding the Fourth Proportional to 245,831, 368,889.90 and 103,667.48

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Solution

The fourth proportional to 245,831, 368,889.90 and 103,667.48 is: 155,561.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,831 : 368,889.90 = 103,667.48 : x
  2. Step 2: Convert to fraction form
    245,831/368,889.90 = 103,667.48/x
  3. Step 3: Cross multiply
    245,831x = 368,889.90 × 103,667.48
  4. Step 4: Simplify right side
    245,831x = 38,241,886,330.45
  5. Step 5: Solve for x
    x = 38,241,886,330.45/245,831
  6. Step 6: Final answer
    x = 155,561.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.