Finding the Fourth Proportional to 278,316.19, 384,077.09 and 150,991.79
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Solution
The fourth proportional to 278,316.19, 384,077.09 and 150,991.79 is: 208,369.07
Step by Step Solution
- Step 1: Write the proportion equation
278,316.19 : 384,077.09 = 150,991.79 : x - Step 2: Convert to fraction form
278,316.19/384,077.09 = 150,991.79/x - Step 3: Cross multiply
278,316.19x = 384,077.09 × 150,991.79 - Step 4: Simplify right side
278,316.19x = 57,992,484,641.75 - Step 5: Solve for x
x = 57,992,484,641.75/278,316.19 - Step 6: Final answer
x = 208,369.07
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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.