Finding the Fourth Proportional to 420,711.98, 631,252.92 and 220,985.96
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Solution
The fourth proportional to 420,711.98, 631,252.92 and 220,985.96 is: 331,576.09
Step by Step Solution
- Step 1: Write the proportion equation
420,711.98 : 631,252.92 = 220,985.96 : x - Step 2: Convert to fraction form
420,711.98/631,252.92 = 220,985.96/x - Step 3: Cross multiply
420,711.98x = 631,252.92 × 220,985.96 - Step 4: Simplify right side
420,711.98x = 139,498,032,529.00 - Step 5: Solve for x
x = 139,498,032,529.00/420,711.98 - Step 6: Final answer
x = 331,576.09
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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.