Finding the Fourth Proportional to 420,428.40, 630,569.70 and 154,051.80
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Solution
The fourth proportional to 420,428.40, 630,569.70 and 154,051.80 is: 231,050.99
Step by Step Solution
- Step 1: Write the proportion equation
420,428.40 : 630,569.70 = 154,051.80 : x - Step 2: Convert to fraction form
420,428.40/630,569.70 = 154,051.80/x - Step 3: Cross multiply
420,428.40x = 630,569.70 × 154,051.80 - Step 4: Simplify right side
420,428.40x = 97,140,397,310.46 - Step 5: Solve for x
x = 97,140,397,310.46/420,428.40 - Step 6: Final answer
x = 231,050.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.