Home / 312,296.16-430,867.68-191,311.20

Finding the Fourth Proportional to 312,296.16, 430,867.68 and 191,311.20

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Solution

The fourth proportional to 312,296.16, 430,867.68 and 191,311.20 is: 263,947.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,296.16 : 430,867.68 = 191,311.20 : x
  2. Step 2: Convert to fraction form
    312,296.16/430,867.68 = 191,311.20/x
  3. Step 3: Cross multiply
    312,296.16x = 430,867.68 × 191,311.20
  4. Step 4: Simplify right side
    312,296.16x = 82,429,812,902.02
  5. Step 5: Solve for x
    x = 82,429,812,902.02/312,296.16
  6. Step 6: Final answer
    x = 263,947.57

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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.