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Finding the Fourth Proportional to 252,620.64, 348,620.76 and 137,905.20

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Solution

The fourth proportional to 252,620.64, 348,620.76 and 137,905.20 is: 190,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,620.64 : 348,620.76 = 137,905.20 : x
  2. Step 2: Convert to fraction form
    252,620.64/348,620.76 = 137,905.20/x
  3. Step 3: Cross multiply
    252,620.64x = 348,620.76 × 137,905.20
  4. Step 4: Simplify right side
    252,620.64x = 48,076,615,631.95
  5. Step 5: Solve for x
    x = 48,076,615,631.95/252,620.64
  6. Step 6: Final answer
    x = 190,311.51

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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.