Finding the Fourth Proportional to 212,821,929.40, 319,374,611.70 and 97,747,238.20
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Solution
The fourth proportional to 212,821,929.40, 319,374,611.70 and 97,747,238.20 is: 146,685,946.95
Step by Step Solution
- Step 1: Write the proportion equation
212,821,929.40 : 319,374,611.70 = 97,747,238.20 : x - Step 2: Convert to fraction form
212,821,929.40/319,374,611.70 = 97,747,238.20/x - Step 3: Cross multiply
212,821,929.40x = 319,374,611.70 × 97,747,238.20 - Step 4: Simplify right side
212,821,929.40x = 31,217,986,244,872,408 - Step 5: Solve for x
x = 31,217,986,244,872,408/212,821,929.40 - Step 6: Final answer
x = 146,685,946.95
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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.