Finding the Fourth Proportional to 388,306,969.50, 582,462,631.68 and 129,521,479.31
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Solution
The fourth proportional to 388,306,969.50, 582,462,631.68 and 129,521,479.31 is: 194,282,945.26
Step by Step Solution
- Step 1: Write the proportion equation
388,306,969.50 : 582,462,631.68 = 129,521,479.31 : x - Step 2: Convert to fraction form
388,306,969.50/582,462,631.68 = 129,521,479.31/x - Step 3: Cross multiply
388,306,969.50x = 582,462,631.68 × 129,521,479.31 - Step 4: Simplify right side
388,306,969.50x = 75,441,421,697,989,264 - Step 5: Solve for x
x = 75,441,421,697,989,264/388,306,969.50 - Step 6: Final answer
x = 194,282,945.26
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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.