Home / 252,215.20-378,130.80-127,645.60

Finding the Fourth Proportional to 252,215.20, 378,130.80 and 127,645.60

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Solution

The fourth proportional to 252,215.20, 378,130.80 and 127,645.60 is: 191,371.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,215.20 : 378,130.80 = 127,645.60 : x
  2. Step 2: Convert to fraction form
    252,215.20/378,130.80 = 127,645.60/x
  3. Step 3: Cross multiply
    252,215.20x = 378,130.80 × 127,645.60
  4. Step 4: Simplify right side
    252,215.20x = 48,266,732,844.48
  5. Step 5: Solve for x
    x = 48,266,732,844.48/252,215.20
  6. Step 6: Final answer
    x = 191,371.23

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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.