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Finding the Fourth Proportional to 572,198.90, 858,153.78 and 212,171.90

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Solution

The fourth proportional to 572,198.90, 858,153.78 and 212,171.90 is: 318,204.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,198.90 : 858,153.78 = 212,171.90 : x
  2. Step 2: Convert to fraction form
    572,198.90/858,153.78 = 212,171.90/x
  3. Step 3: Cross multiply
    572,198.90x = 858,153.78 × 212,171.90
  4. Step 4: Simplify right side
    572,198.90x = 182,076,113,704.01
  5. Step 5: Solve for x
    x = 182,076,113,704.01/572,198.90
  6. Step 6: Final answer
    x = 318,204.24

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1.5x scale

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.