Home / 207,899.30-311,411.55-172,907.30

Finding the Fourth Proportional to 207,899.30, 311,411.55 and 172,907.30

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Solution

The fourth proportional to 207,899.30, 311,411.55 and 172,907.30 is: 258,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,899.30 : 311,411.55 = 172,907.30 : x
  2. Step 2: Convert to fraction form
    207,899.30/311,411.55 = 172,907.30/x
  3. Step 3: Cross multiply
    207,899.30x = 311,411.55 × 172,907.30
  4. Step 4: Simplify right side
    207,899.30x = 53,845,330,299.32
  5. Step 5: Solve for x
    x = 53,845,330,299.32/207,899.30
  6. Step 6: Final answer
    x = 258,997.17

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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.