Home / 206,553.20-309,829.80-66,410.24

Finding the Fourth Proportional to 206,553.20, 309,829.80 and 66,410.24

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Solution

The fourth proportional to 206,553.20, 309,829.80 and 66,410.24 is: 99,615.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,553.20 : 309,829.80 = 66,410.24 : x
  2. Step 2: Convert to fraction form
    206,553.20/309,829.80 = 66,410.24/x
  3. Step 3: Cross multiply
    206,553.20x = 309,829.80 × 66,410.24
  4. Step 4: Simplify right side
    206,553.20x = 20,575,869,828.00
  5. Step 5: Solve for x
    x = 20,575,869,828.00/206,553.20
  6. Step 6: Final answer
    x = 99,615.35

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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.