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Finding the Fourth Proportional to 251,636.92, 347,258.90 and 138,459.68

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Solution

The fourth proportional to 251,636.92, 347,258.90 and 138,459.68 is: 191,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,636.92 : 347,258.90 = 138,459.68 : x
  2. Step 2: Convert to fraction form
    251,636.92/347,258.90 = 138,459.68/x
  3. Step 3: Cross multiply
    251,636.92x = 347,258.90 × 138,459.68
  4. Step 4: Simplify right side
    251,636.92x = 48,081,356,171.15
  5. Step 5: Solve for x
    x = 48,081,356,171.15/251,636.92
  6. Step 6: Final answer
    x = 191,074.33

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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.