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Finding the Fourth Proportional to 287,627.94, 396,926.92 and 172,907.84

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Solution

The fourth proportional to 287,627.94, 396,926.92 and 172,907.84 is: 238,613.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,627.94 : 396,926.92 = 172,907.84 : x
  2. Step 2: Convert to fraction form
    287,627.94/396,926.92 = 172,907.84/x
  3. Step 3: Cross multiply
    287,627.94x = 396,926.92 × 172,907.84
  4. Step 4: Simplify right side
    287,627.94x = 68,631,776,375.05
  5. Step 5: Solve for x
    x = 68,631,776,375.05/287,627.94
  6. Step 6: Final answer
    x = 238,613.04

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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.