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Finding the Fourth Proportional to 255,686.91, 352,769.72 and 148,235.49

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Solution

The fourth proportional to 255,686.91, 352,769.72 and 148,235.49 is: 204,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,686.91 : 352,769.72 = 148,235.49 : x
  2. Step 2: Convert to fraction form
    255,686.91/352,769.72 = 148,235.49/x
  3. Step 3: Cross multiply
    255,686.91x = 352,769.72 × 148,235.49
  4. Step 4: Simplify right side
    255,686.91x = 52,292,991,790.03
  5. Step 5: Solve for x
    x = 52,292,991,790.03/255,686.91
  6. Step 6: Final answer
    x = 204,519.63

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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.