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Finding the Fourth Proportional to 252,018.28, 347,784.42 and 138,840.04

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Solution

The fourth proportional to 252,018.28, 347,784.42 and 138,840.04 is: 191,598.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,018.28 : 347,784.42 = 138,840.04 : x
  2. Step 2: Convert to fraction form
    252,018.28/347,784.42 = 138,840.04/x
  3. Step 3: Cross multiply
    252,018.28x = 347,784.42 × 138,840.04
  4. Step 4: Simplify right side
    252,018.28x = 48,286,402,784.18
  5. Step 5: Solve for x
    x = 48,286,402,784.18/252,018.28
  6. Step 6: Final answer
    x = 191,598.81

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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.