Home / 257,279.64-355,072.20-148,388.22

Finding the Fourth Proportional to 257,279.64, 355,072.20 and 148,388.22

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Solution

The fourth proportional to 257,279.64, 355,072.20 and 148,388.22 is: 204,790.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,279.64 : 355,072.20 = 148,388.22 : x
  2. Step 2: Convert to fraction form
    257,279.64/355,072.20 = 148,388.22/x
  3. Step 3: Cross multiply
    257,279.64x = 355,072.20 × 148,388.22
  4. Step 4: Simplify right side
    257,279.64x = 52,688,531,729.48
  5. Step 5: Solve for x
    x = 52,688,531,729.48/257,279.64
  6. Step 6: Final answer
    x = 204,790.91

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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.