Finding the Fourth Proportional to 217,307.25, 299,817.99 and 136,815.12
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Solution
The fourth proportional to 217,307.25, 299,817.99 and 136,815.12 is: 188,763.30
Step by Step Solution
- Step 1: Write the proportion equation
217,307.25 : 299,817.99 = 136,815.12 : x - Step 2: Convert to fraction form
217,307.25/299,817.99 = 136,815.12/x - Step 3: Cross multiply
217,307.25x = 299,817.99 × 136,815.12 - Step 4: Simplify right side
217,307.25x = 41,019,634,280.01 - Step 5: Solve for x
x = 41,019,634,280.01/217,307.25 - Step 6: Final answer
x = 188,763.30
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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.