Finding the Fourth Proportional to 420,388.69, 580,137.99 and 229,402.08
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Solution
The fourth proportional to 420,388.69, 580,137.99 and 229,402.08 is: 316,575.74
Step by Step Solution
- Step 1: Write the proportion equation
420,388.69 : 580,137.99 = 229,402.08 : x - Step 2: Convert to fraction form
420,388.69/580,137.99 = 229,402.08/x - Step 3: Cross multiply
420,388.69x = 580,137.99 × 229,402.08 - Step 4: Simplify right side
420,388.69x = 133,084,861,593.02 - Step 5: Solve for x
x = 133,084,861,593.02/420,388.69 - Step 6: Final answer
x = 316,575.74
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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.