Finding the Fourth Proportional to 209,953,823.80, 314,930,735.70 and 190,821,947.80
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Solution
The fourth proportional to 209,953,823.80, 314,930,735.70 and 190,821,947.80 is: 286,232,921.70
Step by Step Solution
- Step 1: Write the proportion equation
209,953,823.80 : 314,930,735.70 = 190,821,947.80 : x - Step 2: Convert to fraction form
209,953,823.80/314,930,735.70 = 190,821,947.80/x - Step 3: Cross multiply
209,953,823.80x = 314,930,735.70 × 190,821,947.80 - Step 4: Simplify right side
209,953,823.80x = 60,095,696,408,361,000 - Step 5: Solve for x
x = 60,095,696,408,361,000/209,953,823.80 - Step 6: Final answer
x = 286,232,921.70
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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.