Home / 213,030.45-318,297.78-205,580.30

Finding the Fourth Proportional to 213,030.45, 318,297.78 and 205,580.30

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Solution

The fourth proportional to 213,030.45, 318,297.78 and 205,580.30 is: 307,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,030.45 : 318,297.78 = 205,580.30 : x
  2. Step 2: Convert to fraction form
    213,030.45/318,297.78 = 205,580.30/x
  3. Step 3: Cross multiply
    213,030.45x = 318,297.78 × 205,580.30
  4. Step 4: Simplify right side
    213,030.45x = 65,435,751,510.25
  5. Step 5: Solve for x
    x = 65,435,751,510.25/213,030.45
  6. Step 6: Final answer
    x = 307,166.19

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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.