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Finding the Fourth Proportional to 251,955.18, 347,698.10 and 138,777.93

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Solution

The fourth proportional to 251,955.18, 347,698.10 and 138,777.93 is: 191,513.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,955.18 : 347,698.10 = 138,777.93 : x
  2. Step 2: Convert to fraction form
    251,955.18/347,698.10 = 138,777.93/x
  3. Step 3: Cross multiply
    251,955.18x = 347,698.10 × 138,777.93
  4. Step 4: Simplify right side
    251,955.18x = 48,252,821,889.04
  5. Step 5: Solve for x
    x = 48,252,821,889.04/251,955.18
  6. Step 6: Final answer
    x = 191,513.51

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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.