Finding the Fourth Proportional to 309,495.98, 464,212.88 and 84,879.01
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Solution
The fourth proportional to 309,495.98, 464,212.88 and 84,879.01 is: 127,309.99
Step by Step Solution
- Step 1: Write the proportion equation
309,495.98 : 464,212.88 = 84,879.01 : x - Step 2: Convert to fraction form
309,495.98/464,212.88 = 84,879.01/x - Step 3: Cross multiply
309,495.98x = 464,212.88 × 84,879.01 - Step 4: Simplify right side
309,495.98x = 39,401,929,683.65 - Step 5: Solve for x
x = 39,401,929,683.65/309,495.98 - Step 6: Final answer
x = 127,309.99
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1.5x scale
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.