Finding the Fourth Proportional to 307,317.36, 423,816.12 and 210,661.68
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Solution
The fourth proportional to 307,317.36, 423,816.12 and 210,661.68 is: 290,519.92
Step by Step Solution
- Step 1: Write the proportion equation
307,317.36 : 423,816.12 = 210,661.68 : x - Step 2: Convert to fraction form
307,317.36/423,816.12 = 210,661.68/x - Step 3: Cross multiply
307,317.36x = 423,816.12 × 210,661.68 - Step 4: Simplify right side
307,317.36x = 89,281,815,850.28 - Step 5: Solve for x
x = 89,281,815,850.28/307,317.36 - Step 6: Final answer
x = 290,519.92
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1.5x scale
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.