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Finding the Fourth Proportional to 207,653.43, 311,552.42 and 65,520.64

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Solution

The fourth proportional to 207,653.43, 311,552.42 and 65,520.64 is: 98,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,653.43 : 311,552.42 = 65,520.64 : x
  2. Step 2: Convert to fraction form
    207,653.43/311,552.42 = 65,520.64/x
  3. Step 3: Cross multiply
    207,653.43x = 311,552.42 × 65,520.64
  4. Step 4: Simplify right side
    207,653.43x = 20,413,113,951.95
  5. Step 5: Solve for x
    x = 20,413,113,951.95/207,653.43
  6. Step 6: Final answer
    x = 98,303.76

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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.