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Finding the Fourth Proportional to 207,228.64, 285,949.97 and 130,718.86

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Solution

The fourth proportional to 207,228.64, 285,949.97 and 130,718.86 is: 180,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,228.64 : 285,949.97 = 130,718.86 : x
  2. Step 2: Convert to fraction form
    207,228.64/285,949.97 = 130,718.86/x
  3. Step 3: Cross multiply
    207,228.64x = 285,949.97 × 130,718.86
  4. Step 4: Simplify right side
    207,228.64x = 37,379,054,095.43
  5. Step 5: Solve for x
    x = 37,379,054,095.43/207,228.64
  6. Step 6: Final answer
    x = 180,375.91

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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.