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Finding the Fourth Proportional to 251,614.96, 347,223.68 and 138,439.60

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Solution

The fourth proportional to 251,614.96, 347,223.68 and 138,439.60 is: 191,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,614.96 : 347,223.68 = 138,439.60 : x
  2. Step 2: Convert to fraction form
    251,614.96/347,223.68 = 138,439.60/x
  3. Step 3: Cross multiply
    251,614.96x = 347,223.68 × 138,439.60
  4. Step 4: Simplify right side
    251,614.96x = 48,069,507,369.73
  5. Step 5: Solve for x
    x = 48,069,507,369.73/251,614.96
  6. Step 6: Final answer
    x = 191,043.92

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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.