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Finding the Fourth Proportional to 371,186.81, 512,469.96 and 255,100.25

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Solution

The fourth proportional to 371,186.81, 512,469.96 and 255,100.25 is: 352,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,186.81 : 512,469.96 = 255,100.25 : x
  2. Step 2: Convert to fraction form
    371,186.81/512,469.96 = 255,100.25/x
  3. Step 3: Cross multiply
    371,186.81x = 512,469.96 × 255,100.25
  4. Step 4: Simplify right side
    371,186.81x = 130,731,214,913.49
  5. Step 5: Solve for x
    x = 130,731,214,913.49/371,186.81
  6. Step 6: Final answer
    x = 352,197.90

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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.