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Finding the Fourth Proportional to 315,399.93, 435,236.69 and 179,421.08

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Solution

The fourth proportional to 315,399.93, 435,236.69 and 179,421.08 is: 247,592.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,399.93 : 435,236.69 = 179,421.08 : x
  2. Step 2: Convert to fraction form
    315,399.93/435,236.69 = 179,421.08/x
  3. Step 3: Cross multiply
    315,399.93x = 435,236.69 × 179,421.08
  4. Step 4: Simplify right side
    315,399.93x = 78,090,636,975.43
  5. Step 5: Solve for x
    x = 78,090,636,975.43/315,399.93
  6. Step 6: Final answer
    x = 247,592.44

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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.