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Finding the Fourth Proportional to 251,730.56, 347,390.52 and 138,555.92

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Solution

The fourth proportional to 251,730.56, 347,390.52 and 138,555.92 is: 191,208.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,730.56 : 347,390.52 = 138,555.92 : x
  2. Step 2: Convert to fraction form
    251,730.56/347,390.52 = 138,555.92/x
  3. Step 3: Cross multiply
    251,730.56x = 347,390.52 × 138,555.92
  4. Step 4: Simplify right side
    251,730.56x = 48,133,013,097.88
  5. Step 5: Solve for x
    x = 48,133,013,097.88/251,730.56
  6. Step 6: Final answer
    x = 191,208.46

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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.