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Finding the Fourth Proportional to 252,648.20, 348,659.80 and 137,931.68

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Solution

The fourth proportional to 252,648.20, 348,659.80 and 137,931.68 is: 190,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,648.20 : 348,659.80 = 137,931.68 : x
  2. Step 2: Convert to fraction form
    252,648.20/348,659.80 = 137,931.68/x
  3. Step 3: Cross multiply
    252,648.20x = 348,659.80 × 137,931.68
  4. Step 4: Simplify right side
    252,648.20x = 48,091,232,489.28
  5. Step 5: Solve for x
    x = 48,091,232,489.28/252,648.20
  6. Step 6: Final answer
    x = 190,348.60

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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.