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Finding the Fourth Proportional to 287,625.94, 396,924.17 and 172,905.84

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Solution

The fourth proportional to 287,625.94, 396,924.17 and 172,905.84 is: 238,610.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,625.94 : 396,924.17 = 172,905.84 : x
  2. Step 2: Convert to fraction form
    287,625.94/396,924.17 = 172,905.84/x
  3. Step 3: Cross multiply
    287,625.94x = 396,924.17 × 172,905.84
  4. Step 4: Simplify right side
    287,625.94x = 68,630,506,165.62
  5. Step 5: Solve for x
    x = 68,630,506,165.62/287,625.94
  6. Step 6: Final answer
    x = 238,610.28

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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.