Home / 205,475.80-308,271.30-100,298.20

Finding the Fourth Proportional to 205,475.80, 308,271.30 and 100,298.20

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Solution

The fourth proportional to 205,475.80, 308,271.30 and 100,298.20 is: 150,475.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,475.80 : 308,271.30 = 100,298.20 : x
  2. Step 2: Convert to fraction form
    205,475.80/308,271.30 = 100,298.20/x
  3. Step 3: Cross multiply
    205,475.80x = 308,271.30 × 100,298.20
  4. Step 4: Simplify right side
    205,475.80x = 30,919,056,501.66
  5. Step 5: Solve for x
    x = 30,919,056,501.66/205,475.80
  6. Step 6: Final answer
    x = 150,475.42

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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.