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Finding the Fourth Proportional to 252,701.35, 348,729.56 and 137,980.79

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Solution

The fourth proportional to 252,701.35, 348,729.56 and 137,980.79 is: 190,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,701.35 : 348,729.56 = 137,980.79 : x
  2. Step 2: Convert to fraction form
    252,701.35/348,729.56 = 137,980.79/x
  3. Step 3: Cross multiply
    252,701.35x = 348,729.56 × 137,980.79
  4. Step 4: Simplify right side
    252,701.35x = 48,117,980,185.15
  5. Step 5: Solve for x
    x = 48,117,980,185.15/252,701.35
  6. Step 6: Final answer
    x = 190,414.42

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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.