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Finding the Fourth Proportional to 285,607.49, 428,668.20 and 152,601.44

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Solution

The fourth proportional to 285,607.49, 428,668.20 and 152,601.44 is: 229,039.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,607.49 : 428,668.20 = 152,601.44 : x
  2. Step 2: Convert to fraction form
    285,607.49/428,668.20 = 152,601.44/x
  3. Step 3: Cross multiply
    285,607.49x = 428,668.20 × 152,601.44
  4. Step 4: Simplify right side
    285,607.49x = 65,415,382,458.87
  5. Step 5: Solve for x
    x = 65,415,382,458.87/285,607.49
  6. Step 6: Final answer
    x = 229,039.45

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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.