Finding the Fourth Proportional to 318,938,861.70, 478,030,378.95 and 134,705,981.70
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Solution
The fourth proportional to 318,938,861.70, 478,030,378.95 and 134,705,981.70 is: 201,899,358.19
Step by Step Solution
- Step 1: Write the proportion equation
318,938,861.70 : 478,030,378.95 = 134,705,981.70 : x - Step 2: Convert to fraction form
318,938,861.70/478,030,378.95 = 134,705,981.70/x - Step 3: Cross multiply
318,938,861.70x = 478,030,378.95 × 134,705,981.70 - Step 4: Simplify right side
318,938,861.70x = 64,393,551,478,882,760 - Step 5: Solve for x
x = 64,393,551,478,882,760/318,938,861.70 - Step 6: Final answer
x = 201,899,358.19
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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.