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Finding the Fourth Proportional to 252,863.40, 348,958.29 and 138,146.88

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Solution

The fourth proportional to 252,863.40, 348,958.29 and 138,146.88 is: 190,646.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,863.40 : 348,958.29 = 138,146.88 : x
  2. Step 2: Convert to fraction form
    252,863.40/348,958.29 = 138,146.88/x
  3. Step 3: Cross multiply
    252,863.40x = 348,958.29 × 138,146.88
  4. Step 4: Simplify right side
    252,863.40x = 48,207,500,840.28
  5. Step 5: Solve for x
    x = 48,207,500,840.28/252,863.40
  6. Step 6: Final answer
    x = 190,646.41

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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.