Finding the Fourth Proportional to 384,911.09, 531,155.84 and 212,818.71
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Solution
The fourth proportional to 384,911.09, 531,155.84 and 212,818.71 is: 293,677.95
Step by Step Solution
- Step 1: Write the proportion equation
384,911.09 : 531,155.84 = 212,818.71 : x - Step 2: Convert to fraction form
384,911.09/531,155.84 = 212,818.71/x - Step 3: Cross multiply
384,911.09x = 531,155.84 × 212,818.71 - Step 4: Simplify right side
384,911.09x = 113,039,900,677.77 - Step 5: Solve for x
x = 113,039,900,677.77/384,911.09 - Step 6: Final answer
x = 293,677.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.