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Finding the Fourth Proportional to 255,376.21, 352,418.97 and 140,655.64

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Solution

The fourth proportional to 255,376.21, 352,418.97 and 140,655.64 is: 194,104.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,376.21 : 352,418.97 = 140,655.64 : x
  2. Step 2: Convert to fraction form
    255,376.21/352,418.97 = 140,655.64/x
  3. Step 3: Cross multiply
    255,376.21x = 352,418.97 × 140,655.64
  4. Step 4: Simplify right side
    255,376.21x = 49,569,715,773.49
  5. Step 5: Solve for x
    x = 49,569,715,773.49/255,376.21
  6. Step 6: Final answer
    x = 194,104.67

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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.