Finding the Fourth Proportional to 420,021.14, 579,643.17 and 229,045.01
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Solution
The fourth proportional to 420,021.14, 579,643.17 and 229,045.01 is: 316,089.75
Step by Step Solution
- Step 1: Write the proportion equation
420,021.14 : 579,643.17 = 229,045.01 : x - Step 2: Convert to fraction form
420,021.14/579,643.17 = 229,045.01/x - Step 3: Cross multiply
420,021.14x = 579,643.17 × 229,045.01 - Step 4: Simplify right side
420,021.14x = 132,764,375,669.08 - Step 5: Solve for x
x = 132,764,375,669.08/420,021.14 - Step 6: Final answer
x = 316,089.75
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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.