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Finding the Fourth Proportional to 248,388, 342,775.48 and 135,211.60

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Solution

The fourth proportional to 248,388, 342,775.48 and 135,211.60 is: 186,592.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,388 : 342,775.48 = 135,211.60 : x
  2. Step 2: Convert to fraction form
    248,388/342,775.48 = 135,211.60/x
  3. Step 3: Cross multiply
    248,388x = 342,775.48 × 135,211.60
  4. Step 4: Simplify right side
    248,388x = 46,347,221,091.57
  5. Step 5: Solve for x
    x = 46,347,221,091.57/248,388
  6. Step 6: Final answer
    x = 186,592.03

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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.