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Finding the Fourth Proportional to 255,645.45, 352,810.87 and 140,944.39

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Solution

The fourth proportional to 255,645.45, 352,810.87 and 140,944.39 is: 194,514.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,645.45 : 352,810.87 = 140,944.39 : x
  2. Step 2: Convert to fraction form
    255,645.45/352,810.87 = 140,944.39/x
  3. Step 3: Cross multiply
    255,645.45x = 352,810.87 × 140,944.39
  4. Step 4: Simplify right side
    255,645.45x = 49,726,711,623.13
  5. Step 5: Solve for x
    x = 49,726,711,623.13/255,645.45
  6. Step 6: Final answer
    x = 194,514.36

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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.