Finding the Fourth Proportional to 230,587.75, 318,211.10 and 129,985.75
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Solution
The fourth proportional to 230,587.75, 318,211.10 and 129,985.75 is: 179,380.34
Step by Step Solution
- Step 1: Write the proportion equation
230,587.75 : 318,211.10 = 129,985.75 : x - Step 2: Convert to fraction form
230,587.75/318,211.10 = 129,985.75/x - Step 3: Cross multiply
230,587.75x = 318,211.10 × 129,985.75 - Step 4: Simplify right side
230,587.75x = 41,362,908,491.83 - Step 5: Solve for x
x = 41,362,908,491.83/230,587.75 - Step 6: Final answer
x = 179,380.34
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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.