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Finding the Fourth Proportional to 572,098.12, 858,119.31 and 212,339.00

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Solution

The fourth proportional to 572,098.12, 858,119.31 and 212,339.00 is: 318,498.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,098.12 : 858,119.31 = 212,339.00 : x
  2. Step 2: Convert to fraction form
    572,098.12/858,119.31 = 212,339.00/x
  3. Step 3: Cross multiply
    572,098.12x = 858,119.31 × 212,339.00
  4. Step 4: Simplify right side
    572,098.12x = 182,212,198,311.39
  5. Step 5: Solve for x
    x = 182,212,198,311.39/572,098.12
  6. Step 6: Final answer
    x = 318,498.16

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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.