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Finding the Fourth Proportional to 255,218.50, 352,221.87 and 147,790.42

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Solution

The fourth proportional to 255,218.50, 352,221.87 and 147,790.42 is: 203,962.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,218.50 : 352,221.87 = 147,790.42 : x
  2. Step 2: Convert to fraction form
    255,218.50/352,221.87 = 147,790.42/x
  3. Step 3: Cross multiply
    255,218.50x = 352,221.87 × 147,790.42
  4. Step 4: Simplify right side
    255,218.50x = 52,055,018,100.49
  5. Step 5: Solve for x
    x = 52,055,018,100.49/255,218.50
  6. Step 6: Final answer
    x = 203,962.56

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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.