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Finding the Fourth Proportional to 248,305.78, 342,669.75 and 140,880.34

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Solution

The fourth proportional to 248,305.78, 342,669.75 and 140,880.34 is: 194,419.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,305.78 : 342,669.75 = 140,880.34 : x
  2. Step 2: Convert to fraction form
    248,305.78/342,669.75 = 140,880.34/x
  3. Step 3: Cross multiply
    248,305.78x = 342,669.75 × 140,880.34
  4. Step 4: Simplify right side
    248,305.78x = 48,275,430,887.72
  5. Step 5: Solve for x
    x = 48,275,430,887.72/248,305.78
  6. Step 6: Final answer
    x = 194,419.28

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1.5x scale

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.