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Finding the Fourth Proportional to 251,957.61, 347,675.54 and 155,146.05

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Solution

The fourth proportional to 251,957.61, 347,675.54 and 155,146.05 is: 214,085.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,957.61 : 347,675.54 = 155,146.05 : x
  2. Step 2: Convert to fraction form
    251,957.61/347,675.54 = 155,146.05/x
  3. Step 3: Cross multiply
    251,957.61x = 347,675.54 × 155,146.05
  4. Step 4: Simplify right side
    251,957.61x = 53,940,485,936.89
  5. Step 5: Solve for x
    x = 53,940,485,936.89/251,957.61
  6. Step 6: Final answer
    x = 214,085.56

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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.