Finding the Fourth Proportional to 354,853,453.72, 489,697,737.42 and 198,220,558.72
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Solution
The fourth proportional to 354,853,453.72, 489,697,737.42 and 198,220,558.72 is: 273,544,354.99
Step by Step Solution
- Step 1: Write the proportion equation
354,853,453.72 : 489,697,737.42 = 198,220,558.72 : x - Step 2: Convert to fraction form
354,853,453.72/489,697,737.42 = 198,220,558.72/x - Step 3: Cross multiply
354,853,453.72x = 489,697,737.42 × 198,220,558.72 - Step 4: Simplify right side
354,853,453.72x = 97,068,159,115,312,256 - Step 5: Solve for x
x = 97,068,159,115,312,256/354,853,453.72 - Step 6: Final answer
x = 273,544,354.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.