Finding the Fourth Proportional to 218,948.63, 328,420.98 and 69,188.94
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Solution
The fourth proportional to 218,948.63, 328,420.98 and 69,188.94 is: 103,782.79
Step by Step Solution
- Step 1: Write the proportion equation
218,948.63 : 328,420.98 = 69,188.94 : x - Step 2: Convert to fraction form
218,948.63/328,420.98 = 69,188.94/x - Step 3: Cross multiply
218,948.63x = 328,420.98 × 69,188.94 - Step 4: Simplify right side
218,948.63x = 22,723,099,479.96 - Step 5: Solve for x
x = 22,723,099,479.96/218,948.63 - Step 6: Final answer
x = 103,782.79
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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.