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Finding the Fourth Proportional to 285,668.79, 428,587.02 and 127,862.16

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Solution

The fourth proportional to 285,668.79, 428,587.02 and 127,862.16 is: 191,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,668.79 : 428,587.02 = 127,862.16 : x
  2. Step 2: Convert to fraction form
    285,668.79/428,587.02 = 127,862.16/x
  3. Step 3: Cross multiply
    285,668.79x = 428,587.02 × 127,862.16
  4. Step 4: Simplify right side
    285,668.79x = 54,800,062,125.16
  5. Step 5: Solve for x
    x = 54,800,062,125.16/285,668.79
  6. Step 6: Final answer
    x = 191,830.76

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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.