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Finding the Fourth Proportional to 285,963.39, 428,945.10 and 75,601.35

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Solution

The fourth proportional to 285,963.39, 428,945.10 and 75,601.35 is: 113,402.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,963.39 : 428,945.10 = 75,601.35 : x
  2. Step 2: Convert to fraction form
    285,963.39/428,945.10 = 75,601.35/x
  3. Step 3: Cross multiply
    285,963.39x = 428,945.10 × 75,601.35
  4. Step 4: Simplify right side
    285,963.39x = 32,428,828,635.89
  5. Step 5: Solve for x
    x = 32,428,828,635.89/285,963.39
  6. Step 6: Final answer
    x = 113,402.03

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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.