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Finding the Fourth Proportional to 285,953.39, 428,651.12 and 136,153.43

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Solution

The fourth proportional to 285,953.39, 428,651.12 and 136,153.43 is: 204,097.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,953.39 : 428,651.12 = 136,153.43 : x
  2. Step 2: Convert to fraction form
    285,953.39/428,651.12 = 136,153.43/x
  3. Step 3: Cross multiply
    285,953.39x = 428,651.12 × 136,153.43
  4. Step 4: Simplify right side
    285,953.39x = 58,362,319,580.57
  5. Step 5: Solve for x
    x = 58,362,319,580.57/285,953.39
  6. Step 6: Final answer
    x = 204,097.32

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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.