Home / 309,899.08-427,810.98-207,888.04

Finding the Fourth Proportional to 309,899.08, 427,810.98 and 207,888.04

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Solution

The fourth proportional to 309,899.08, 427,810.98 and 207,888.04 is: 286,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,899.08 : 427,810.98 = 207,888.04 : x
  2. Step 2: Convert to fraction form
    309,899.08/427,810.98 = 207,888.04/x
  3. Step 3: Cross multiply
    309,899.08x = 427,810.98 × 207,888.04
  4. Step 4: Simplify right side
    309,899.08x = 88,936,786,122.68
  5. Step 5: Solve for x
    x = 88,936,786,122.68/309,899.08
  6. Step 6: Final answer
    x = 286,986.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.