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Finding the Fourth Proportional to 329,128.32, 453,772.80 and 268,636.80

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Solution

The fourth proportional to 329,128.32, 453,772.80 and 268,636.80 is: 370,372.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,128.32 : 453,772.80 = 268,636.80 : x
  2. Step 2: Convert to fraction form
    329,128.32/453,772.80 = 268,636.80/x
  3. Step 3: Cross multiply
    329,128.32x = 453,772.80 × 268,636.80
  4. Step 4: Simplify right side
    329,128.32x = 121,900,072,919.04
  5. Step 5: Solve for x
    x = 121,900,072,919.04/329,128.32
  6. Step 6: Final answer
    x = 370,372.48

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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.