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Finding the Fourth Proportional to 270,969.30, 406,289.93 and 121,181.67

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Solution

The fourth proportional to 270,969.30, 406,289.93 and 121,181.67 is: 181,699.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,969.30 : 406,289.93 = 121,181.67 : x
  2. Step 2: Convert to fraction form
    270,969.30/406,289.93 = 121,181.67/x
  3. Step 3: Cross multiply
    270,969.30x = 406,289.93 × 121,181.67
  4. Step 4: Simplify right side
    270,969.30x = 49,234,891,615.67
  5. Step 5: Solve for x
    x = 49,234,891,615.67/270,969.30
  6. Step 6: Final answer
    x = 181,699.15

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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.