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Finding the Fourth Proportional to 248,431.60, 342,835.14 and 135,254.08

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Solution

The fourth proportional to 248,431.60, 342,835.14 and 135,254.08 is: 186,650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,431.60 : 342,835.14 = 135,254.08 : x
  2. Step 2: Convert to fraction form
    248,431.60/342,835.14 = 135,254.08/x
  3. Step 3: Cross multiply
    248,431.60x = 342,835.14 × 135,254.08
  4. Step 4: Simplify right side
    248,431.60x = 46,369,851,452.37
  5. Step 5: Solve for x
    x = 46,369,851,452.37/248,431.60
  6. Step 6: Final answer
    x = 186,650.38

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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.