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Finding the Fourth Proportional to 580,784.21, 870,979.80 and 220,869.53

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Solution

The fourth proportional to 580,784.21, 870,979.80 and 220,869.53 is: 331,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,784.21 : 870,979.80 = 220,869.53 : x
  2. Step 2: Convert to fraction form
    580,784.21/870,979.80 = 220,869.53/x
  3. Step 3: Cross multiply
    580,784.21x = 870,979.80 × 220,869.53
  4. Step 4: Simplify right side
    580,784.21x = 192,372,898,289.31
  5. Step 5: Solve for x
    x = 192,372,898,289.31/580,784.21
  6. Step 6: Final answer
    x = 331,229.56

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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.