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Finding the Fourth Proportional to 285,600.62, 428,490.45 and 171,872.51

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Solution

The fourth proportional to 285,600.62, 428,490.45 and 171,872.51 is: 257,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,600.62 : 428,490.45 = 171,872.51 : x
  2. Step 2: Convert to fraction form
    285,600.62/428,490.45 = 171,872.51/x
  3. Step 3: Cross multiply
    285,600.62x = 428,490.45 × 171,872.51
  4. Step 4: Simplify right side
    285,600.62x = 73,645,729,152.53
  5. Step 5: Solve for x
    x = 73,645,729,152.53/285,600.62
  6. Step 6: Final answer
    x = 257,862.64

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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.