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Finding the Fourth Proportional to 248,299.32, 342,629.36 and 139,378.71

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Solution

The fourth proportional to 248,299.32, 342,629.36 and 139,378.71 is: 192,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,299.32 : 342,629.36 = 139,378.71 : x
  2. Step 2: Convert to fraction form
    248,299.32/342,629.36 = 139,378.71/x
  3. Step 3: Cross multiply
    248,299.32x = 342,629.36 × 139,378.71
  4. Step 4: Simplify right side
    248,299.32x = 47,755,237,508.03
  5. Step 5: Solve for x
    x = 47,755,237,508.03/248,299.32
  6. Step 6: Final answer
    x = 192,329.31

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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.