Home / 309,724.74-427,570.32-207,713.04

Finding the Fourth Proportional to 309,724.74, 427,570.32 and 207,713.04

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Solution

The fourth proportional to 309,724.74, 427,570.32 and 207,713.04 is: 286,744.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,724.74 : 427,570.32 = 207,713.04 : x
  2. Step 2: Convert to fraction form
    309,724.74/427,570.32 = 207,713.04/x
  3. Step 3: Cross multiply
    309,724.74x = 427,570.32 × 207,713.04
  4. Step 4: Simplify right side
    309,724.74x = 88,811,930,980.97
  5. Step 5: Solve for x
    x = 88,811,930,980.97/309,724.74
  6. Step 6: Final answer
    x = 286,744.71

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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.