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Finding the Fourth Proportional to 207,186.44, 285,813.78 and 130,800.20

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Solution

The fourth proportional to 207,186.44, 285,813.78 and 130,800.20 is: 180,438.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,186.44 : 285,813.78 = 130,800.20 : x
  2. Step 2: Convert to fraction form
    207,186.44/285,813.78 = 130,800.20/x
  3. Step 3: Cross multiply
    207,186.44x = 285,813.78 × 130,800.20
  4. Step 4: Simplify right side
    207,186.44x = 37,384,499,586.76
  5. Step 5: Solve for x
    x = 37,384,499,586.76/207,186.44
  6. Step 6: Final answer
    x = 180,438.93

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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.