Finding the Fourth Proportional to 287,313,811.19, 430,970,722.50 and 68,964,153.30
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Solution
The fourth proportional to 287,313,811.19, 430,970,722.50 and 68,964,153.30 is: 103,446,231.32
Step by Step Solution
- Step 1: Write the proportion equation
287,313,811.19 : 430,970,722.50 = 68,964,153.30 : x - Step 2: Convert to fraction form
287,313,811.19/430,970,722.50 = 68,964,153.30/x - Step 3: Cross multiply
287,313,811.19x = 430,970,722.50 × 68,964,153.30 - Step 4: Simplify right side
287,313,811.19x = 29,721,530,974,301,756 - Step 5: Solve for x
x = 29,721,530,974,301,756/287,313,811.19 - Step 6: Final answer
x = 103,446,231.32
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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.