Finding the Fourth Proportional to 253,128,214.57, 379,728,706.71 and 78,264,885.44
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Solution
The fourth proportional to 253,128,214.57, 379,728,706.71 and 78,264,885.44 is: 117,408,578.02
Step by Step Solution
- Step 1: Write the proportion equation
253,128,214.57 : 379,728,706.71 = 78,264,885.44 : x - Step 2: Convert to fraction form
253,128,214.57/379,728,706.71 = 78,264,885.44/x - Step 3: Cross multiply
253,128,214.57x = 379,728,706.71 × 78,264,885.44 - Step 4: Simplify right side
253,128,214.57x = 29,719,423,728,937,508 - Step 5: Solve for x
x = 29,719,423,728,937,508/253,128,214.57 - Step 6: Final answer
x = 117,408,578.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.