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Finding the Fourth Proportional to 255,458.91, 352,560.80 and 140,749.09

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Solution

The fourth proportional to 255,458.91, 352,560.80 and 140,749.09 is: 194,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,458.91 : 352,560.80 = 140,749.09 : x
  2. Step 2: Convert to fraction form
    255,458.91/352,560.80 = 140,749.09/x
  3. Step 3: Cross multiply
    255,458.91x = 352,560.80 × 140,749.09
  4. Step 4: Simplify right side
    255,458.91x = 49,622,613,223.30
  5. Step 5: Solve for x
    x = 49,622,613,223.30/255,458.91
  6. Step 6: Final answer
    x = 194,248.90

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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.