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Finding the Fourth Proportional to 265,850.10, 398,429.55 and 191,891.70

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Solution

The fourth proportional to 265,850.10, 398,429.55 and 191,891.70 is: 287,588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,850.10 : 398,429.55 = 191,891.70 : x
  2. Step 2: Convert to fraction form
    265,850.10/398,429.55 = 191,891.70/x
  3. Step 3: Cross multiply
    265,850.10x = 398,429.55 × 191,891.70
  4. Step 4: Simplify right side
    265,850.10x = 76,455,323,679.74
  5. Step 5: Solve for x
    x = 76,455,323,679.74/265,850.10
  6. Step 6: Final answer
    x = 287,588.09

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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.