Finding the Fourth Proportional to 228,799.86, 315,636.99 and 143,963.70
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Solution
The fourth proportional to 228,799.86, 315,636.99 and 143,963.70 is: 198,602.70
Step by Step Solution
- Step 1: Write the proportion equation
228,799.86 : 315,636.99 = 143,963.70 : x - Step 2: Convert to fraction form
228,799.86/315,636.99 = 143,963.70/x - Step 3: Cross multiply
228,799.86x = 315,636.99 × 143,963.70 - Step 4: Simplify right side
228,799.86x = 45,440,268,937.26 - Step 5: Solve for x
x = 45,440,268,937.26/228,799.86 - Step 6: Final answer
x = 198,602.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.