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Finding the Fourth Proportional to 251,963.05, 347,696.80 and 143,053.10

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Solution

The fourth proportional to 251,963.05, 347,696.80 and 143,053.10 is: 197,406.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,963.05 : 347,696.80 = 143,053.10 : x
  2. Step 2: Convert to fraction form
    251,963.05/347,696.80 = 143,053.10/x
  3. Step 3: Cross multiply
    251,963.05x = 347,696.80 × 143,053.10
  4. Step 4: Simplify right side
    251,963.05x = 49,739,105,100.08
  5. Step 5: Solve for x
    x = 49,739,105,100.08/251,963.05
  6. Step 6: Final answer
    x = 197,406.35

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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.