Finding the Fourth Proportional to 212,778,869.40, 319,310,021.70 and 97,704,178.20
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Solution
The fourth proportional to 212,778,869.40, 319,310,021.70 and 97,704,178.20 is: 146,621,341.44
Step by Step Solution
- Step 1: Write the proportion equation
212,778,869.40 : 319,310,021.70 = 97,704,178.20 : x - Step 2: Convert to fraction form
212,778,869.40/319,310,021.70 = 97,704,178.20/x - Step 3: Cross multiply
212,778,869.40x = 319,310,021.70 × 97,704,178.20 - Step 4: Simplify right side
212,778,869.40x = 31,197,923,261,222,668 - Step 5: Solve for x
x = 31,197,923,261,222,668/212,778,869.40 - Step 6: Final answer
x = 146,621,341.44
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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.