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Finding the Fourth Proportional to 207,572.01, 311,358.30 and 57,812.73

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Solution

The fourth proportional to 207,572.01, 311,358.30 and 57,812.73 is: 86,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,572.01 : 311,358.30 = 57,812.73 : x
  2. Step 2: Convert to fraction form
    207,572.01/311,358.30 = 57,812.73/x
  3. Step 3: Cross multiply
    207,572.01x = 311,358.30 × 57,812.73
  4. Step 4: Simplify right side
    207,572.01x = 18,000,473,331.16
  5. Step 5: Solve for x
    x = 18,000,473,331.16/207,572.01
  6. Step 6: Final answer
    x = 86,719.17

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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.