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Finding the Fourth Proportional to 207,730.60, 311,135.10 and 83,007.40

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Solution

The fourth proportional to 207,730.60, 311,135.10 and 83,007.40 is: 124,326.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,730.60 : 311,135.10 = 83,007.40 : x
  2. Step 2: Convert to fraction form
    207,730.60/311,135.10 = 83,007.40/x
  3. Step 3: Cross multiply
    207,730.60x = 311,135.10 × 83,007.40
  4. Step 4: Simplify right side
    207,730.60x = 25,826,515,699.74
  5. Step 5: Solve for x
    x = 25,826,515,699.74/207,730.60
  6. Step 6: Final answer
    x = 124,326.97

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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.