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Finding the Fourth Proportional to 399,394.21, 599,070.89 and 146,655.26

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Solution

The fourth proportional to 399,394.21, 599,070.89 and 146,655.26 is: 219,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,394.21 : 599,070.89 = 146,655.26 : x
  2. Step 2: Convert to fraction form
    399,394.21/599,070.89 = 146,655.26/x
  3. Step 3: Cross multiply
    399,394.21x = 599,070.89 × 146,655.26
  4. Step 4: Simplify right side
    399,394.21x = 87,856,899,912.72
  5. Step 5: Solve for x
    x = 87,856,899,912.72/399,394.21
  6. Step 6: Final answer
    x = 219,975.40

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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.