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Finding the Fourth Proportional to 251,955.02, 347,697.86 and 138,777.77

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Solution

The fourth proportional to 251,955.02, 347,697.86 and 138,777.77 is: 191,513.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,955.02 : 347,697.86 = 138,777.77 : x
  2. Step 2: Convert to fraction form
    251,955.02/347,697.86 = 138,777.77/x
  3. Step 3: Cross multiply
    251,955.02x = 347,697.86 × 138,777.77
  4. Step 4: Simplify right side
    251,955.02x = 48,252,731,212.19
  5. Step 5: Solve for x
    x = 48,252,731,212.19/251,955.02
  6. Step 6: Final answer
    x = 191,513.28

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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.