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Finding the Fourth Proportional to 572,419.62, 858,601.72 and 217,405.94

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Solution

The fourth proportional to 572,419.62, 858,601.72 and 217,405.94 is: 326,098.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,419.62 : 858,601.72 = 217,405.94 : x
  2. Step 2: Convert to fraction form
    572,419.62/858,601.72 = 217,405.94/x
  3. Step 3: Cross multiply
    572,419.62x = 858,601.72 × 217,405.94
  4. Step 4: Simplify right side
    572,419.62x = 186,665,114,022.22
  5. Step 5: Solve for x
    x = 186,665,114,022.22/572,419.62
  6. Step 6: Final answer
    x = 326,098.39

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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.