Finding the Fourth Proportional to 291,912.12, 402,838.56 and 157,776.12
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Solution
The fourth proportional to 291,912.12, 402,838.56 and 157,776.12 is: 217,730.96
Step by Step Solution
- Step 1: Write the proportion equation
291,912.12 : 402,838.56 = 157,776.12 : x - Step 2: Convert to fraction form
291,912.12/402,838.56 = 157,776.12/x - Step 3: Cross multiply
291,912.12x = 402,838.56 × 157,776.12 - Step 4: Simplify right side
291,912.12x = 63,558,304,983.19 - Step 5: Solve for x
x = 63,558,304,983.19/291,912.12 - Step 6: Final answer
x = 217,730.96
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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.