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Finding the Fourth Proportional to 245,712.68, 368,185.02 and 170,978.84

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Solution

The fourth proportional to 245,712.68, 368,185.02 and 170,978.84 is: 256,201.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,712.68 : 368,185.02 = 170,978.84 : x
  2. Step 2: Convert to fraction form
    245,712.68/368,185.02 = 170,978.84/x
  3. Step 3: Cross multiply
    245,712.68x = 368,185.02 × 170,978.84
  4. Step 4: Simplify right side
    245,712.68x = 62,951,847,624.98
  5. Step 5: Solve for x
    x = 62,951,847,624.98/245,712.68
  6. Step 6: Final answer
    x = 256,201.05

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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.