Finding the Fourth Proportional to 291,989.75, 402,946.26 and 157,853.75
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Solution
The fourth proportional to 291,989.75, 402,946.26 and 157,853.75 is: 217,838.39
Step by Step Solution
- Step 1: Write the proportion equation
291,989.75 : 402,946.26 = 157,853.75 : x - Step 2: Convert to fraction form
291,989.75/402,946.26 = 157,853.75/x - Step 3: Cross multiply
291,989.75x = 402,946.26 × 157,853.75 - Step 4: Simplify right side
291,989.75x = 63,606,578,189.48 - Step 5: Solve for x
x = 63,606,578,189.48/291,989.75 - Step 6: Final answer
x = 217,838.39
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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.