Finding the Fourth Proportional to 247,378,823.36, 371,006,916.24 and 83,612,939.12
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Solution
The fourth proportional to 247,378,823.36, 371,006,916.24 and 83,612,939.12 is: 125,398,683.20
Step by Step Solution
- Step 1: Write the proportion equation
247,378,823.36 : 371,006,916.24 = 83,612,939.12 : x - Step 2: Convert to fraction form
247,378,823.36/371,006,916.24 = 83,612,939.12/x - Step 3: Cross multiply
247,378,823.36x = 371,006,916.24 × 83,612,939.12 - Step 4: Simplify right side
247,378,823.36x = 31,020,978,700,674,060 - Step 5: Solve for x
x = 31,020,978,700,674,060/247,378,823.36 - Step 6: Final answer
x = 125,398,683.20
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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.