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Finding the Fourth Proportional to 248,532.30, 342,978.48 and 135,354.96

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Solution

The fourth proportional to 248,532.30, 342,978.48 and 135,354.96 is: 186,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,532.30 : 342,978.48 = 135,354.96 : x
  2. Step 2: Convert to fraction form
    248,532.30/342,978.48 = 135,354.96/x
  3. Step 3: Cross multiply
    248,532.30x = 342,978.48 × 135,354.96
  4. Step 4: Simplify right side
    248,532.30x = 46,423,838,441.26
  5. Step 5: Solve for x
    x = 46,423,838,441.26/248,532.30
  6. Step 6: Final answer
    x = 186,791.97

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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.