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Finding the Fourth Proportional to 207,932.40, 311,315.40 and 202,100.40

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Solution

The fourth proportional to 207,932.40, 311,315.40 and 202,100.40 is: 302,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,932.40 : 311,315.40 = 202,100.40 : x
  2. Step 2: Convert to fraction form
    207,932.40/311,315.40 = 202,100.40/x
  3. Step 3: Cross multiply
    207,932.40x = 311,315.40 × 202,100.40
  4. Step 4: Simplify right side
    207,932.40x = 62,916,966,866.16
  5. Step 5: Solve for x
    x = 62,916,966,866.16/207,932.40
  6. Step 6: Final answer
    x = 302,583.76

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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.