Finding the Fourth Proportional to 420,760.08, 631,145.70 and 140,277.42
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Solution
The fourth proportional to 420,760.08, 631,145.70 and 140,277.42 is: 210,417.99
Step by Step Solution
- Step 1: Write the proportion equation
420,760.08 : 631,145.70 = 140,277.42 : x - Step 2: Convert to fraction form
420,760.08/631,145.70 = 140,277.42/x - Step 3: Cross multiply
420,760.08x = 631,145.70 × 140,277.42 - Step 4: Simplify right side
420,760.08x = 88,535,490,440.09 - Step 5: Solve for x
x = 88,535,490,440.09/420,760.08 - Step 6: Final answer
x = 210,417.99
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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.