Home / 217,591.23-300,281.36-122,105.55

Finding the Fourth Proportional to 217,591.23, 300,281.36 and 122,105.55

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Solution

The fourth proportional to 217,591.23, 300,281.36 and 122,105.55 is: 168,508.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,591.23 : 300,281.36 = 122,105.55 : x
  2. Step 2: Convert to fraction form
    217,591.23/300,281.36 = 122,105.55/x
  3. Step 3: Cross multiply
    217,591.23x = 300,281.36 × 122,105.55
  4. Step 4: Simplify right side
    217,591.23x = 36,666,020,007.02
  5. Step 5: Solve for x
    x = 36,666,020,007.02/217,591.23
  6. Step 6: Final answer
    x = 168,508.72

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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.