Finding the Fourth Proportional to 212,312.34, 317,976.33 and 127,888.07
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Solution
The fourth proportional to 212,312.34, 317,976.33 and 127,888.07 is: 191,535.63
Step by Step Solution
- Step 1: Write the proportion equation
212,312.34 : 317,976.33 = 127,888.07 : x - Step 2: Convert to fraction form
212,312.34/317,976.33 = 127,888.07/x - Step 3: Cross multiply
212,312.34x = 317,976.33 × 127,888.07 - Step 4: Simplify right side
212,312.34x = 40,665,378,039.08 - Step 5: Solve for x
x = 40,665,378,039.08/212,312.34 - Step 6: Final answer
x = 191,535.63
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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.