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Finding the Fourth Proportional to 248,735.95, 343,254.31 and 135,557.71

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Solution

The fourth proportional to 248,735.95, 343,254.31 and 135,557.71 is: 187,068.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,735.95 : 343,254.31 = 135,557.71 : x
  2. Step 2: Convert to fraction form
    248,735.95/343,254.31 = 135,557.71/x
  3. Step 3: Cross multiply
    248,735.95x = 343,254.31 × 135,557.71
  4. Step 4: Simplify right side
    248,735.95x = 46,530,768,211.23
  5. Step 5: Solve for x
    x = 46,530,768,211.23/248,735.95
  6. Step 6: Final answer
    x = 187,068.93

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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.