Finding the Fourth Proportional to 419,724.65, 579,203.12 and 228,733.94
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Solution
The fourth proportional to 419,724.65, 579,203.12 and 228,733.94 is: 315,643.63
Step by Step Solution
- Step 1: Write the proportion equation
419,724.65 : 579,203.12 = 228,733.94 : x - Step 2: Convert to fraction form
419,724.65/579,203.12 = 228,733.94/x - Step 3: Cross multiply
419,724.65x = 579,203.12 × 228,733.94 - Step 4: Simplify right side
419,724.65x = 132,483,413,717.74 - Step 5: Solve for x
x = 132,483,413,717.74/419,724.65 - Step 6: Final answer
x = 315,643.63
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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.