Finding the Fourth Proportional to 278,799.26, 384,730.44 and 157,938.08
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Solution
The fourth proportional to 278,799.26, 384,730.44 and 157,938.08 is: 217,947.45
Step by Step Solution
- Step 1: Write the proportion equation
278,799.26 : 384,730.44 = 157,938.08 : x - Step 2: Convert to fraction form
278,799.26/384,730.44 = 157,938.08/x - Step 3: Cross multiply
278,799.26x = 384,730.44 × 157,938.08 - Step 4: Simplify right side
278,799.26x = 60,763,587,011.16 - Step 5: Solve for x
x = 60,763,587,011.16/278,799.26 - Step 6: Final answer
x = 217,947.45
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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.