Home / 322,487.28-445,231.62-207,806.40

Finding the Fourth Proportional to 322,487.28, 445,231.62 and 207,806.40

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Solution

The fourth proportional to 322,487.28, 445,231.62 and 207,806.40 is: 286,901.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,487.28 : 445,231.62 = 207,806.40 : x
  2. Step 2: Convert to fraction form
    322,487.28/445,231.62 = 207,806.40/x
  3. Step 3: Cross multiply
    322,487.28x = 445,231.62 × 207,806.40
  4. Step 4: Simplify right side
    322,487.28x = 92,521,980,118.37
  5. Step 5: Solve for x
    x = 92,521,980,118.37/322,487.28
  6. Step 6: Final answer
    x = 286,901.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.