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Finding the Fourth Proportional to 207,709.40, 311,564.10 and 207,709.40

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Solution

The fourth proportional to 207,709.40, 311,564.10 and 207,709.40 is: 311,564.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,709.40 : 311,564.10 = 207,709.40 : x
  2. Step 2: Convert to fraction form
    207,709.40/311,564.10 = 207,709.40/x
  3. Step 3: Cross multiply
    207,709.40x = 311,564.10 × 207,709.40
  4. Step 4: Simplify right side
    207,709.40x = 64,714,792,272.54
  5. Step 5: Solve for x
    x = 64,714,792,272.54/207,709.40
  6. Step 6: Final answer
    x = 311,564.10

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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.