Home / 207,545.12-311,317.90-57,785.72

Finding the Fourth Proportional to 207,545.12, 311,317.90 and 57,785.72

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Solution

The fourth proportional to 207,545.12, 311,317.90 and 57,785.72 is: 86,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,545.12 : 311,317.90 = 57,785.72 : x
  2. Step 2: Convert to fraction form
    207,545.12/311,317.90 = 57,785.72/x
  3. Step 3: Cross multiply
    207,545.12x = 311,317.90 × 57,785.72
  4. Step 4: Simplify right side
    207,545.12x = 17,989,729,000.39
  5. Step 5: Solve for x
    x = 17,989,729,000.39/207,545.12
  6. Step 6: Final answer
    x = 86,678.64

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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.