Finding the Fourth Proportional to 198,152,026.40, 297,228,039.60 and 129,277,272.80
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Solution
The fourth proportional to 198,152,026.40, 297,228,039.60 and 129,277,272.80 is: 193,915,909.20
Step by Step Solution
- Step 1: Write the proportion equation
198,152,026.40 : 297,228,039.60 = 129,277,272.80 : x - Step 2: Convert to fraction form
198,152,026.40/297,228,039.60 = 129,277,272.80/x - Step 3: Cross multiply
198,152,026.40x = 297,228,039.60 × 129,277,272.80 - Step 4: Simplify right side
198,152,026.40x = 38,424,830,359,178,408 - Step 5: Solve for x
x = 38,424,830,359,178,408/198,152,026.40 - Step 6: Final answer
x = 193,915,909.20
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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.