Finding the Fourth Proportional to 291,851.76, 402,755.88 and 157,715.76
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Solution
The fourth proportional to 291,851.76, 402,755.88 and 157,715.76 is: 217,647.99
Step by Step Solution
- Step 1: Write the proportion equation
291,851.76 : 402,755.88 = 157,715.76 : x - Step 2: Convert to fraction form
291,851.76/402,755.88 = 157,715.76/x - Step 3: Cross multiply
291,851.76x = 402,755.88 × 157,715.76 - Step 4: Simplify right side
291,851.76x = 63,520,949,708.67 - Step 5: Solve for x
x = 63,520,949,708.67/291,851.76 - Step 6: Final answer
x = 217,647.99
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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.