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Finding the Fourth Proportional to 368,945.55, 509,336.78 and 248,718.87

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Solution

The fourth proportional to 368,945.55, 509,336.78 and 248,718.87 is: 343,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,945.55 : 509,336.78 = 248,718.87 : x
  2. Step 2: Convert to fraction form
    368,945.55/509,336.78 = 248,718.87/x
  3. Step 3: Cross multiply
    368,945.55x = 509,336.78 × 248,718.87
  4. Step 4: Simplify right side
    368,945.55x = 126,681,667,127.44
  5. Step 5: Solve for x
    x = 126,681,667,127.44/368,945.55
  6. Step 6: Final answer
    x = 343,361.42

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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.