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Finding the Fourth Proportional to 270,355.68, 405,556.58 and 70,675.74

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Solution

The fourth proportional to 270,355.68, 405,556.58 and 70,675.74 is: 106,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,355.68 : 405,556.58 = 70,675.74 : x
  2. Step 2: Convert to fraction form
    270,355.68/405,556.58 = 70,675.74/x
  3. Step 3: Cross multiply
    270,355.68x = 405,556.58 × 70,675.74
  4. Step 4: Simplify right side
    270,355.68x = 28,663,011,049.99
  5. Step 5: Solve for x
    x = 28,663,011,049.99/270,355.68
  6. Step 6: Final answer
    x = 106,019.64

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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.