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Finding the Fourth Proportional to 251,886, 347,602.72 and 138,708.48

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Solution

The fourth proportional to 251,886, 347,602.72 and 138,708.48 is: 191,417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,886 : 347,602.72 = 138,708.48 : x
  2. Step 2: Convert to fraction form
    251,886/347,602.72 = 138,708.48/x
  3. Step 3: Cross multiply
    251,886x = 347,602.72 × 138,708.48
  4. Step 4: Simplify right side
    251,886x = 48,215,444,935.07
  5. Step 5: Solve for x
    x = 48,215,444,935.07/251,886
  6. Step 6: Final answer
    x = 191,417.72

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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.