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Finding the Fourth Proportional to 287,620.32, 397,020.24 and 174,440.64

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Solution

The fourth proportional to 287,620.32, 397,020.24 and 174,440.64 is: 240,791.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,620.32 : 397,020.24 = 174,440.64 : x
  2. Step 2: Convert to fraction form
    287,620.32/397,020.24 = 174,440.64/x
  3. Step 3: Cross multiply
    287,620.32x = 397,020.24 × 174,440.64
  4. Step 4: Simplify right side
    287,620.32x = 69,256,464,758.55
  5. Step 5: Solve for x
    x = 69,256,464,758.55/287,620.32
  6. Step 6: Final answer
    x = 240,791.28

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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.