Finding the Fourth Proportional to 274,352.55, 378,621.21 and 153,486.63
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Solution
The fourth proportional to 274,352.55, 378,621.21 and 153,486.63 is: 211,819.77
Step by Step Solution
- Step 1: Write the proportion equation
274,352.55 : 378,621.21 = 153,486.63 : x - Step 2: Convert to fraction form
274,352.55/378,621.21 = 153,486.63/x - Step 3: Cross multiply
274,352.55x = 378,621.21 × 153,486.63 - Step 4: Simplify right side
274,352.55x = 58,113,293,569.42 - Step 5: Solve for x
x = 58,113,293,569.42/274,352.55 - Step 6: Final answer
x = 211,819.77
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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.