Finding the Fourth Proportional to 209,952,453.30, 314,928,679.95 and 128,323,115.70
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Solution
The fourth proportional to 209,952,453.30, 314,928,679.95 and 128,323,115.70 is: 192,484,673.55
Step by Step Solution
- Step 1: Write the proportion equation
209,952,453.30 : 314,928,679.95 = 128,323,115.70 : x - Step 2: Convert to fraction form
209,952,453.30/314,928,679.95 = 128,323,115.70/x - Step 3: Cross multiply
209,952,453.30x = 314,928,679.95 × 128,323,115.70 - Step 4: Simplify right side
209,952,453.30x = 40,412,629,434,472,120 - Step 5: Solve for x
x = 40,412,629,434,472,120/209,952,453.30 - Step 6: Final answer
x = 192,484,673.55
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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.