Finding the Fourth Proportional to 219,163,396.20, 328,115,948.70 and 212,871,940.20
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Solution
The fourth proportional to 219,163,396.20, 328,115,948.70 and 212,871,940.20 is: 318,696,825.39
Step by Step Solution
- Step 1: Write the proportion equation
219,163,396.20 : 328,115,948.70 = 212,871,940.20 : x - Step 2: Convert to fraction form
219,163,396.20/328,115,948.70 = 212,871,940.20/x - Step 3: Cross multiply
219,163,396.20x = 328,115,948.70 × 212,871,940.20 - Step 4: Simplify right side
219,163,396.20x = 69,846,678,610,332,664 - Step 5: Solve for x
x = 69,846,678,610,332,664/219,163,396.20 - Step 6: Final answer
x = 318,696,825.39
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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.