Finding the Fourth Proportional to 212,990,581.60, 319,485,872.40 and 190,032,330.40
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Solution
The fourth proportional to 212,990,581.60, 319,485,872.40 and 190,032,330.40 is: 285,048,495.60
Step by Step Solution
- Step 1: Write the proportion equation
212,990,581.60 : 319,485,872.40 = 190,032,330.40 : x - Step 2: Convert to fraction form
212,990,581.60/319,485,872.40 = 190,032,330.40/x - Step 3: Cross multiply
212,990,581.60x = 319,485,872.40 × 190,032,330.40 - Step 4: Simplify right side
212,990,581.60x = 60,712,644,862,049,040 - Step 5: Solve for x
x = 60,712,644,862,049,040/212,990,581.60 - Step 6: Final answer
x = 285,048,495.60
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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.