Finding the Fourth Proportional to 420,302.79, 630,639.14 and 220,575.02
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Solution
The fourth proportional to 420,302.79, 630,639.14 and 220,575.02 is: 330,959.58
Step by Step Solution
- Step 1: Write the proportion equation
420,302.79 : 630,639.14 = 220,575.02 : x - Step 2: Convert to fraction form
420,302.79/630,639.14 = 220,575.02/x - Step 3: Cross multiply
420,302.79x = 630,639.14 × 220,575.02 - Step 4: Simplify right side
420,302.79x = 139,103,236,662.21 - Step 5: Solve for x
x = 139,103,236,662.21/420,302.79 - Step 6: Final answer
x = 330,959.58
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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.