Finding the Fourth Proportional to 420,214.84, 579,902.70 and 238,904.44
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Solution
The fourth proportional to 420,214.84, 579,902.70 and 238,904.44 is: 329,691.66
Step by Step Solution
- Step 1: Write the proportion equation
420,214.84 : 579,902.70 = 238,904.44 : x - Step 2: Convert to fraction form
420,214.84/579,902.70 = 238,904.44/x - Step 3: Cross multiply
420,214.84x = 579,902.70 × 238,904.44 - Step 4: Simplify right side
420,214.84x = 138,541,329,797.99 - Step 5: Solve for x
x = 138,541,329,797.99/420,214.84 - Step 6: Final answer
x = 329,691.66
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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.