Finding the Fourth Proportional to 228,789.84, 315,623.18 and 143,953.68
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Solution
The fourth proportional to 228,789.84, 315,623.18 and 143,953.68 is: 198,588.88
Step by Step Solution
- Step 1: Write the proportion equation
228,789.84 : 315,623.18 = 143,953.68 : x - Step 2: Convert to fraction form
228,789.84/315,623.18 = 143,953.68/x - Step 3: Cross multiply
228,789.84x = 315,623.18 × 143,953.68 - Step 4: Simplify right side
228,789.84x = 45,435,118,254.30 - Step 5: Solve for x
x = 45,435,118,254.30/228,789.84 - Step 6: Final answer
x = 198,588.88
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1.5x scale
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.