Finding the Fourth Proportional to 420,208.18, 579,935.68 and 233,958.40
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Solution
The fourth proportional to 420,208.18, 579,935.68 and 233,958.40 is: 322,889.53
Step by Step Solution
- Step 1: Write the proportion equation
420,208.18 : 579,935.68 = 233,958.40 : x - Step 2: Convert to fraction form
420,208.18/579,935.68 = 233,958.40/x - Step 3: Cross multiply
420,208.18x = 579,935.68 × 233,958.40 - Step 4: Simplify right side
420,208.18x = 135,680,821,760.98 - Step 5: Solve for x
x = 135,680,821,760.98/420,208.18 - Step 6: Final answer
x = 322,889.53
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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.