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Finding the Fourth Proportional to 499,446.28, 689,200.68 and 305,886.52

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Solution

The fourth proportional to 499,446.28, 689,200.68 and 305,886.52 is: 422,101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,446.28 : 689,200.68 = 305,886.52 : x
  2. Step 2: Convert to fraction form
    499,446.28/689,200.68 = 305,886.52/x
  3. Step 3: Cross multiply
    499,446.28x = 689,200.68 × 305,886.52
  4. Step 4: Simplify right side
    499,446.28x = 210,817,197,586.83
  5. Step 5: Solve for x
    x = 210,817,197,586.83/499,446.28
  6. Step 6: Final answer
    x = 422,101.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.