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Finding the Fourth Proportional to 257,485.44, 355,310.36 and 144,286.32

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Solution

The fourth proportional to 257,485.44, 355,310.36 and 144,286.32 is: 199,104.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,485.44 : 355,310.36 = 144,286.32 : x
  2. Step 2: Convert to fraction form
    257,485.44/355,310.36 = 144,286.32/x
  3. Step 3: Cross multiply
    257,485.44x = 355,310.36 × 144,286.32
  4. Step 4: Simplify right side
    257,485.44x = 51,266,424,302.28
  5. Step 5: Solve for x
    x = 51,266,424,302.28/257,485.44
  6. Step 6: Final answer
    x = 199,104.17

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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.