Home / 209,461.55-311,823.07-208,215.97

Finding the Fourth Proportional to 209,461.55, 311,823.07 and 208,215.97

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Solution

The fourth proportional to 209,461.55, 311,823.07 and 208,215.97 is: 309,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,461.55 : 311,823.07 = 208,215.97 : x
  2. Step 2: Convert to fraction form
    209,461.55/311,823.07 = 208,215.97/x
  3. Step 3: Cross multiply
    209,461.55x = 311,823.07 × 208,215.97
  4. Step 4: Simplify right side
    209,461.55x = 64,926,541,688.33
  5. Step 5: Solve for x
    x = 64,926,541,688.33/209,461.55
  6. Step 6: Final answer
    x = 309,968.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.