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Finding the Fourth Proportional to 251,463.60, 347,019.84 and 138,286.32

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Solution

The fourth proportional to 251,463.60, 347,019.84 and 138,286.32 is: 190,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,463.60 : 347,019.84 = 138,286.32 : x
  2. Step 2: Convert to fraction form
    251,463.60/347,019.84 = 138,286.32/x
  3. Step 3: Cross multiply
    251,463.60x = 347,019.84 × 138,286.32
  4. Step 4: Simplify right side
    251,463.60x = 47,988,096,640.59
  5. Step 5: Solve for x
    x = 47,988,096,640.59/251,463.60
  6. Step 6: Final answer
    x = 190,835.16

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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.