Home / 245,815.80-368,723.70-211,990.20

Finding the Fourth Proportional to 245,815.80, 368,723.70 and 211,990.20

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Solution

The fourth proportional to 245,815.80, 368,723.70 and 211,990.20 is: 317,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,815.80 : 368,723.70 = 211,990.20 : x
  2. Step 2: Convert to fraction form
    245,815.80/368,723.70 = 211,990.20/x
  3. Step 3: Cross multiply
    245,815.80x = 368,723.70 × 211,990.20
  4. Step 4: Simplify right side
    245,815.80x = 78,165,810,907.74
  5. Step 5: Solve for x
    x = 78,165,810,907.74/245,815.80
  6. Step 6: Final answer
    x = 317,985.30

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1.5x scale

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.