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Finding the Fourth Proportional to 248,293.51, 342,621.38 and 139,372.90

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Solution

The fourth proportional to 248,293.51, 342,621.38 and 139,372.90 is: 192,321.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,293.51 : 342,621.38 = 139,372.90 : x
  2. Step 2: Convert to fraction form
    248,293.51/342,621.38 = 139,372.90/x
  3. Step 3: Cross multiply
    248,293.51x = 342,621.38 × 139,372.90
  4. Step 4: Simplify right side
    248,293.51x = 47,752,134,824.48
  5. Step 5: Solve for x
    x = 47,752,134,824.48/248,293.51
  6. Step 6: Final answer
    x = 192,321.32

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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.