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Finding the Fourth Proportional to 572,745.60, 858,794.40 and 217,771.20

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Solution

The fourth proportional to 572,745.60, 858,794.40 and 217,771.20 is: 326,533.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,745.60 : 858,794.40 = 217,771.20 : x
  2. Step 2: Convert to fraction form
    572,745.60/858,794.40 = 217,771.20/x
  3. Step 3: Cross multiply
    572,745.60x = 858,794.40 × 217,771.20
  4. Step 4: Simplify right side
    572,745.60x = 187,020,687,041.28
  5. Step 5: Solve for x
    x = 187,020,687,041.28/572,745.60
  6. Step 6: Final answer
    x = 326,533.61

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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.