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Finding the Fourth Proportional to 251,602.09, 347,209.81 and 138,422.41

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Solution

The fourth proportional to 251,602.09, 347,209.81 and 138,422.41 is: 191,022.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,602.09 : 347,209.81 = 138,422.41 : x
  2. Step 2: Convert to fraction form
    251,602.09/347,209.81 = 138,422.41/x
  3. Step 3: Cross multiply
    251,602.09x = 347,209.81 × 138,422.41
  4. Step 4: Simplify right side
    251,602.09x = 48,061,618,675.84
  5. Step 5: Solve for x
    x = 48,061,618,675.84/251,602.09
  6. Step 6: Final answer
    x = 191,022.33

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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.