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Finding the Fourth Proportional to 339,881.51, 469,095.20 and 196,720.49

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Solution

The fourth proportional to 339,881.51, 469,095.20 and 196,720.49 is: 271,508.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,881.51 : 469,095.20 = 196,720.49 : x
  2. Step 2: Convert to fraction form
    339,881.51/469,095.20 = 196,720.49/x
  3. Step 3: Cross multiply
    339,881.51x = 469,095.20 × 196,720.49
  4. Step 4: Simplify right side
    339,881.51x = 92,280,634,271.57
  5. Step 5: Solve for x
    x = 92,280,634,271.57/339,881.51
  6. Step 6: Final answer
    x = 271,508.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.