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Finding the Fourth Proportional to 315,336.58, 435,158.39 and 172,097.64

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Solution

The fourth proportional to 315,336.58, 435,158.39 and 172,097.64 is: 237,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,336.58 : 435,158.39 = 172,097.64 : x
  2. Step 2: Convert to fraction form
    315,336.58/435,158.39 = 172,097.64/x
  3. Step 3: Cross multiply
    315,336.58x = 435,158.39 × 172,097.64
  4. Step 4: Simplify right side
    315,336.58x = 74,889,732,375.44
  5. Step 5: Solve for x
    x = 74,889,732,375.44/315,336.58
  6. Step 6: Final answer
    x = 237,491.42

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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.