Home / 443,918.40-665,112.15-206,774.70

Finding the Fourth Proportional to 443,918.40, 665,112.15 and 206,774.70

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Solution

The fourth proportional to 443,918.40, 665,112.15 and 206,774.70 is: 309,805.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,918.40 : 665,112.15 = 206,774.70 : x
  2. Step 2: Convert to fraction form
    443,918.40/665,112.15 = 206,774.70/x
  3. Step 3: Cross multiply
    443,918.40x = 665,112.15 × 206,774.70
  4. Step 4: Simplify right side
    443,918.40x = 137,528,365,282.61
  5. Step 5: Solve for x
    x = 137,528,365,282.61/443,918.40
  6. Step 6: Final answer
    x = 309,805.51

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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.