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Finding the Fourth Proportional to 285,519.52, 428,897.28 and 185,628.34

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Solution

The fourth proportional to 285,519.52, 428,897.28 and 185,628.34 is: 278,844.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,519.52 : 428,897.28 = 185,628.34 : x
  2. Step 2: Convert to fraction form
    285,519.52/428,897.28 = 185,628.34/x
  3. Step 3: Cross multiply
    285,519.52x = 428,897.28 × 185,628.34
  4. Step 4: Simplify right side
    285,519.52x = 79,615,490,116.92
  5. Step 5: Solve for x
    x = 79,615,490,116.92/285,519.52
  6. Step 6: Final answer
    x = 278,844.30

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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.