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Finding the Fourth Proportional to 572,257.72, 858,346.85 and 172,900.59

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Solution

The fourth proportional to 572,257.72, 858,346.85 and 172,900.59 is: 259,338.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,257.72 : 858,346.85 = 172,900.59 : x
  2. Step 2: Convert to fraction form
    572,257.72/858,346.85 = 172,900.59/x
  3. Step 3: Cross multiply
    572,257.72x = 858,346.85 × 172,900.59
  4. Step 4: Simplify right side
    572,257.72x = 148,408,671,633.40
  5. Step 5: Solve for x
    x = 148,408,671,633.40/572,257.72
  6. Step 6: Final answer
    x = 259,338.87

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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.