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Finding the Fourth Proportional to 251,051.54, 346,458.21 and 137,881.58

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Solution

The fourth proportional to 251,051.54, 346,458.21 and 137,881.58 is: 190,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,051.54 : 346,458.21 = 137,881.58 : x
  2. Step 2: Convert to fraction form
    251,051.54/346,458.21 = 137,881.58/x
  3. Step 3: Cross multiply
    251,051.54x = 346,458.21 × 137,881.58
  4. Step 4: Simplify right side
    251,051.54x = 47,770,205,398.77
  5. Step 5: Solve for x
    x = 47,770,205,398.77/251,051.54
  6. Step 6: Final answer
    x = 190,280.47

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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.