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Finding the Fourth Proportional to 285,668.56, 428,516.49 and 235,655.92

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Solution

The fourth proportional to 285,668.56, 428,516.49 and 235,655.92 is: 353,495.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,668.56 : 428,516.49 = 235,655.92 : x
  2. Step 2: Convert to fraction form
    285,668.56/428,516.49 = 235,655.92/x
  3. Step 3: Cross multiply
    285,668.56x = 428,516.49 × 235,655.92
  4. Step 4: Simplify right side
    285,668.56x = 100,982,447,686.12
  5. Step 5: Solve for x
    x = 100,982,447,686.12/285,668.56
  6. Step 6: Final answer
    x = 353,495.14

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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.