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Finding the Fourth Proportional to 572,669.82, 858,735 and 212,591.21

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Solution

The fourth proportional to 572,669.82, 858,735 and 212,591.21 is: 318,786.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,669.82 : 858,735 = 212,591.21 : x
  2. Step 2: Convert to fraction form
    572,669.82/858,735 = 212,591.21/x
  3. Step 3: Cross multiply
    572,669.82x = 858,735 × 212,591.21
  4. Step 4: Simplify right side
    572,669.82x = 182,559,508,425.68
  5. Step 5: Solve for x
    x = 182,559,508,425.68/572,669.82
  6. Step 6: Final answer
    x = 318,786.68

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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.