Finding the Fourth Proportional to 312,869.28, 432,115.98 and 212,092.32
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Solution
The fourth proportional to 312,869.28, 432,115.98 and 212,092.32 is: 292,928.99
Step by Step Solution
- Step 1: Write the proportion equation
312,869.28 : 432,115.98 = 212,092.32 : x - Step 2: Convert to fraction form
312,869.28/432,115.98 = 212,092.32/x - Step 3: Cross multiply
312,869.28x = 432,115.98 × 212,092.32 - Step 4: Simplify right side
312,869.28x = 91,648,480,707.27 - Step 5: Solve for x
x = 91,648,480,707.27/312,869.28 - Step 6: Final answer
x = 292,928.99
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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.