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Finding the Fourth Proportional to 253,126.60, 380,127.30 and 135,028.60

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Solution

The fourth proportional to 253,126.60, 380,127.30 and 135,028.60 is: 202,776.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,126.60 : 380,127.30 = 135,028.60 : x
  2. Step 2: Convert to fraction form
    253,126.60/380,127.30 = 135,028.60/x
  3. Step 3: Cross multiply
    253,126.60x = 380,127.30 × 135,028.60
  4. Step 4: Simplify right side
    253,126.60x = 51,328,057,140.78
  5. Step 5: Solve for x
    x = 51,328,057,140.78/253,126.60
  6. Step 6: Final answer
    x = 202,776.23

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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.