Finding the Fourth Proportional to 212,958,583.60, 319,217,425.80 and 115,708,817.20
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Solution
The fourth proportional to 212,958,583.60, 319,217,425.80 and 115,708,817.20 is: 173,443,446.82
Step by Step Solution
- Step 1: Write the proportion equation
212,958,583.60 : 319,217,425.80 = 115,708,817.20 : x - Step 2: Convert to fraction form
212,958,583.60/319,217,425.80 = 115,708,817.20/x - Step 3: Cross multiply
212,958,583.60x = 319,217,425.80 × 115,708,817.20 - Step 4: Simplify right side
212,958,583.60x = 36,936,270,768,946,768 - Step 5: Solve for x
x = 36,936,270,768,946,768/212,958,583.60 - Step 6: Final answer
x = 173,443,446.82
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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.