Finding the Fourth Proportional to 218,903,149.80, 328,138,148.70 and 103,685,178.60
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Solution
The fourth proportional to 218,903,149.80, 328,138,148.70 and 103,685,178.60 is: 155,425,184.99
Step by Step Solution
- Step 1: Write the proportion equation
218,903,149.80 : 328,138,148.70 = 103,685,178.60 : x - Step 2: Convert to fraction form
218,903,149.80/328,138,148.70 = 103,685,178.60/x - Step 3: Cross multiply
218,903,149.80x = 328,138,148.70 × 103,685,178.60 - Step 4: Simplify right side
218,903,149.80x = 34,023,062,553,432,856 - Step 5: Solve for x
x = 34,023,062,553,432,856/218,903,149.80 - Step 6: Final answer
x = 155,425,184.99
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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.