Finding the Fourth Proportional to 289,656.20, 399,703.74 and 162,307.28
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Solution
The fourth proportional to 289,656.20, 399,703.74 and 162,307.28 is: 223,971.82
Step by Step Solution
- Step 1: Write the proportion equation
289,656.20 : 399,703.74 = 162,307.28 : x - Step 2: Convert to fraction form
289,656.20/399,703.74 = 162,307.28/x - Step 3: Cross multiply
289,656.20x = 399,703.74 × 162,307.28 - Step 4: Simplify right side
289,656.20x = 64,874,826,845.23 - Step 5: Solve for x
x = 64,874,826,845.23/289,656.20 - Step 6: Final answer
x = 223,971.82
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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.