Finding the Fourth Proportional to 420,355.41, 580,085.65 and 229,371.99
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Solution
The fourth proportional to 420,355.41, 580,085.65 and 229,371.99 is: 316,530.72
Step by Step Solution
- Step 1: Write the proportion equation
420,355.41 : 580,085.65 = 229,371.99 : x - Step 2: Convert to fraction form
420,355.41/580,085.65 = 229,371.99/x - Step 3: Cross multiply
420,355.41x = 580,085.65 × 229,371.99 - Step 4: Simplify right side
420,355.41x = 133,055,399,910.94 - Step 5: Solve for x
x = 133,055,399,910.94/420,355.41 - Step 6: Final answer
x = 316,530.72
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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.