Home / 305,120.08-421,090.57-169,196.65

Finding the Fourth Proportional to 305,120.08, 421,090.57 and 169,196.65

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Solution

The fourth proportional to 305,120.08, 421,090.57 and 169,196.65 is: 233,505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,120.08 : 421,090.57 = 169,196.65 : x
  2. Step 2: Convert to fraction form
    305,120.08/421,090.57 = 169,196.65/x
  3. Step 3: Cross multiply
    305,120.08x = 421,090.57 × 169,196.65
  4. Step 4: Simplify right side
    305,120.08x = 71,247,111,685.14
  5. Step 5: Solve for x
    x = 71,247,111,685.14/305,120.08
  6. Step 6: Final answer
    x = 233,505.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.