Finding the Fourth Proportional to 153,312,138.60, 229,968,207.90 and 138,195,594.60
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Solution
The fourth proportional to 153,312,138.60, 229,968,207.90 and 138,195,594.60 is: 207,293,391.90
Step by Step Solution
- Step 1: Write the proportion equation
153,312,138.60 : 229,968,207.90 = 138,195,594.60 : x - Step 2: Convert to fraction form
153,312,138.60/229,968,207.90 = 138,195,594.60/x - Step 3: Cross multiply
153,312,138.60x = 229,968,207.90 × 138,195,594.60 - Step 4: Simplify right side
153,312,138.60x = 31,780,593,229,836,916 - Step 5: Solve for x
x = 31,780,593,229,836,916/153,312,138.60 - Step 6: Final answer
x = 207,293,391.90
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1.5x scale
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.