Finding the Fourth Proportional to 420,639.01, 630,433.63 and 210,337.09
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Solution
The fourth proportional to 420,639.01, 630,433.63 and 210,337.09 is: 315,243.17
Step by Step Solution
- Step 1: Write the proportion equation
420,639.01 : 630,433.63 = 210,337.09 : x - Step 2: Convert to fraction form
420,639.01/630,433.63 = 210,337.09/x - Step 3: Cross multiply
420,639.01x = 630,433.63 × 210,337.09 - Step 4: Simplify right side
420,639.01x = 132,603,575,172.34 - Step 5: Solve for x
x = 132,603,575,172.34/420,639.01 - Step 6: Final answer
x = 315,243.17
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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.