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Finding the Fourth Proportional to 207,315.70, 311,301.60 and 157,452.10

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Solution

The fourth proportional to 207,315.70, 311,301.60 and 157,452.10 is: 236,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,315.70 : 311,301.60 = 157,452.10 : x
  2. Step 2: Convert to fraction form
    207,315.70/311,301.60 = 157,452.10/x
  3. Step 3: Cross multiply
    207,315.70x = 311,301.60 × 157,452.10
  4. Step 4: Simplify right side
    207,315.70x = 49,015,090,653.36
  5. Step 5: Solve for x
    x = 49,015,090,653.36/207,315.70
  6. Step 6: Final answer
    x = 236,427.30

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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.