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Finding the Fourth Proportional to 251,805.58, 347,478.51 and 138,606.22

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Solution

The fourth proportional to 251,805.58, 347,478.51 and 138,606.22 is: 191,269.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,805.58 : 347,478.51 = 138,606.22 : x
  2. Step 2: Convert to fraction form
    251,805.58/347,478.51 = 138,606.22/x
  3. Step 3: Cross multiply
    251,805.58x = 347,478.51 × 138,606.22
  4. Step 4: Simplify right side
    251,805.58x = 48,162,682,802.33
  5. Step 5: Solve for x
    x = 48,162,682,802.33/251,805.58
  6. Step 6: Final answer
    x = 191,269.32

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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.