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Finding the Fourth Proportional to 172,288.40, 258,432.44 and 53,968.97

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Solution

The fourth proportional to 172,288.40, 258,432.44 and 53,968.97 is: 80,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,288.40 : 258,432.44 = 53,968.97 : x
  2. Step 2: Convert to fraction form
    172,288.40/258,432.44 = 53,968.97/x
  3. Step 3: Cross multiply
    172,288.40x = 258,432.44 × 53,968.97
  4. Step 4: Simplify right side
    172,288.40x = 13,947,331,039.38
  5. Step 5: Solve for x
    x = 13,947,331,039.38/172,288.40
  6. Step 6: Final answer
    x = 80,953.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.