Finding the Fourth Proportional to 228,727.92, 315,644.52 and 128,125.68
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Solution
The fourth proportional to 228,727.92, 315,644.52 and 128,125.68 is: 176,813.43
Step by Step Solution
- Step 1: Write the proportion equation
228,727.92 : 315,644.52 = 128,125.68 : x - Step 2: Convert to fraction form
228,727.92/315,644.52 = 128,125.68/x - Step 3: Cross multiply
228,727.92x = 315,644.52 × 128,125.68 - Step 4: Simplify right side
228,727.92x = 40,442,168,763.27 - Step 5: Solve for x
x = 40,442,168,763.27/228,727.92 - Step 6: Final answer
x = 176,813.43
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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.