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Finding the Fourth Proportional to 245,633.10, 368,449.65 and 87,866.70

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Solution

The fourth proportional to 245,633.10, 368,449.65 and 87,866.70 is: 131,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,633.10 : 368,449.65 = 87,866.70 : x
  2. Step 2: Convert to fraction form
    245,633.10/368,449.65 = 87,866.70/x
  3. Step 3: Cross multiply
    245,633.10x = 368,449.65 × 87,866.70
  4. Step 4: Simplify right side
    245,633.10x = 32,374,454,861.66
  5. Step 5: Solve for x
    x = 32,374,454,861.66/245,633.10
  6. Step 6: Final answer
    x = 131,800.05

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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.