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Finding the Fourth Proportional to 248,496.80, 342,929.49 and 135,319.46

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Solution

The fourth proportional to 248,496.80, 342,929.49 and 135,319.46 is: 186,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,496.80 : 342,929.49 = 135,319.46 : x
  2. Step 2: Convert to fraction form
    248,496.80/342,929.49 = 135,319.46/x
  3. Step 3: Cross multiply
    248,496.80x = 342,929.49 × 135,319.46
  4. Step 4: Simplify right side
    248,496.80x = 46,405,033,404.88
  5. Step 5: Solve for x
    x = 46,405,033,404.88/248,496.80
  6. Step 6: Final answer
    x = 186,742.98

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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.