Home / 245,020.20-367,530.30-78,808.20

Finding the Fourth Proportional to 245,020.20, 367,530.30 and 78,808.20

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Solution

The fourth proportional to 245,020.20, 367,530.30 and 78,808.20 is: 118,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,020.20 : 367,530.30 = 78,808.20 : x
  2. Step 2: Convert to fraction form
    245,020.20/367,530.30 = 78,808.20/x
  3. Step 3: Cross multiply
    245,020.20x = 367,530.30 × 78,808.20
  4. Step 4: Simplify right side
    245,020.20x = 28,964,401,388.46
  5. Step 5: Solve for x
    x = 28,964,401,388.46/245,020.20
  6. Step 6: Final answer
    x = 118,212.30

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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.