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Finding the Fourth Proportional to 513,856.80, 770,785.20 and 134,776.80

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Solution

The fourth proportional to 513,856.80, 770,785.20 and 134,776.80 is: 202,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,856.80 : 770,785.20 = 134,776.80 : x
  2. Step 2: Convert to fraction form
    513,856.80/770,785.20 = 134,776.80/x
  3. Step 3: Cross multiply
    513,856.80x = 770,785.20 × 134,776.80
  4. Step 4: Simplify right side
    513,856.80x = 103,883,962,743.36
  5. Step 5: Solve for x
    x = 103,883,962,743.36/513,856.80
  6. Step 6: Final answer
    x = 202,165.20

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Similar ratio
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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.