Home / 207,717.40-311,576.10-67,490.20

Finding the Fourth Proportional to 207,717.40, 311,576.10 and 67,490.20

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Solution

The fourth proportional to 207,717.40, 311,576.10 and 67,490.20 is: 101,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,717.40 : 311,576.10 = 67,490.20 : x
  2. Step 2: Convert to fraction form
    207,717.40/311,576.10 = 67,490.20/x
  3. Step 3: Cross multiply
    207,717.40x = 311,576.10 × 67,490.20
  4. Step 4: Simplify right side
    207,717.40x = 21,028,333,304.22
  5. Step 5: Solve for x
    x = 21,028,333,304.22/207,717.40
  6. Step 6: Final answer
    x = 101,235.30

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1.5x scale

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.