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Finding the Fourth Proportional to 206,597.60, 309,969.30 and 199,307.60

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Solution

The fourth proportional to 206,597.60, 309,969.30 and 199,307.60 is: 299,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,597.60 : 309,969.30 = 199,307.60 : x
  2. Step 2: Convert to fraction form
    206,597.60/309,969.30 = 199,307.60/x
  3. Step 3: Cross multiply
    206,597.60x = 309,969.30 × 199,307.60
  4. Step 4: Simplify right side
    206,597.60x = 61,779,237,256.68
  5. Step 5: Solve for x
    x = 61,779,237,256.68/206,597.60
  6. Step 6: Final answer
    x = 299,031.73

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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.