Finding the Fourth Proportional to 420,153.18, 579,818.30 and 229,166.58
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Solution
The fourth proportional to 420,153.18, 579,818.30 and 229,166.58 is: 316,253.65
Step by Step Solution
- Step 1: Write the proportion equation
420,153.18 : 579,818.30 = 229,166.58 : x - Step 2: Convert to fraction form
420,153.18/579,818.30 = 229,166.58/x - Step 3: Cross multiply
420,153.18x = 579,818.30 × 229,166.58 - Step 4: Simplify right side
420,153.18x = 132,874,976,832.41 - Step 5: Solve for x
x = 132,874,976,832.41/420,153.18 - Step 6: Final answer
x = 316,253.65
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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.