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Finding the Fourth Proportional to 255,049.69, 351,971.27 and 140,329.84

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Solution

The fourth proportional to 255,049.69, 351,971.27 and 140,329.84 is: 193,656.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,049.69 : 351,971.27 = 140,329.84 : x
  2. Step 2: Convert to fraction form
    255,049.69/351,971.27 = 140,329.84/x
  3. Step 3: Cross multiply
    255,049.69x = 351,971.27 × 140,329.84
  4. Step 4: Simplify right side
    255,049.69x = 49,392,072,003.70
  5. Step 5: Solve for x
    x = 49,392,072,003.70/255,049.69
  6. Step 6: Final answer
    x = 193,656.66

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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.