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Finding the Fourth Proportional to 208,358.55, 312,340.98 and 189,266.04

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Solution

The fourth proportional to 208,358.55, 312,340.98 and 189,266.04 is: 283,720.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,358.55 : 312,340.98 = 189,266.04 : x
  2. Step 2: Convert to fraction form
    208,358.55/312,340.98 = 189,266.04/x
  3. Step 3: Cross multiply
    208,358.55x = 312,340.98 × 189,266.04
  4. Step 4: Simplify right side
    208,358.55x = 59,115,540,414.32
  5. Step 5: Solve for x
    x = 59,115,540,414.32/208,358.55
  6. Step 6: Final answer
    x = 283,720.25

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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.