Finding the Fourth Proportional to 198,528,078.70, 297,792,118.05 and 147,509,742.70
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Solution
The fourth proportional to 198,528,078.70, 297,792,118.05 and 147,509,742.70 is: 221,264,614.05
Step by Step Solution
- Step 1: Write the proportion equation
198,528,078.70 : 297,792,118.05 = 147,509,742.70 : x - Step 2: Convert to fraction form
198,528,078.70/297,792,118.05 = 147,509,742.70/x - Step 3: Cross multiply
198,528,078.70x = 297,792,118.05 × 147,509,742.70 - Step 4: Simplify right side
198,528,078.70x = 43,927,238,711,643,520 - Step 5: Solve for x
x = 43,927,238,711,643,520/198,528,078.70 - Step 6: Final answer
x = 221,264,614.05
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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.