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Finding the Fourth Proportional to 252,066.56, 347,858.28 and 138,889.40

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Solution

The fourth proportional to 252,066.56, 347,858.28 and 138,889.40 is: 191,670.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,066.56 : 347,858.28 = 138,889.40 : x
  2. Step 2: Convert to fraction form
    252,066.56/347,858.28 = 138,889.40/x
  3. Step 3: Cross multiply
    252,066.56x = 347,858.28 × 138,889.40
  4. Step 4: Simplify right side
    252,066.56x = 48,313,827,794.23
  5. Step 5: Solve for x
    x = 48,313,827,794.23/252,066.56
  6. Step 6: Final answer
    x = 191,670.91

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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.