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Finding the Fourth Proportional to 251,662.08, 347,280.48 and 138,463.20

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Solution

The fourth proportional to 251,662.08, 347,280.48 and 138,463.20 is: 191,071.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,662.08 : 347,280.48 = 138,463.20 : x
  2. Step 2: Convert to fraction form
    251,662.08/347,280.48 = 138,463.20/x
  3. Step 3: Cross multiply
    251,662.08x = 347,280.48 × 138,463.20
  4. Step 4: Simplify right side
    251,662.08x = 48,085,566,558.34
  5. Step 5: Solve for x
    x = 48,085,566,558.34/251,662.08
  6. Step 6: Final answer
    x = 191,071.96

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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.