Finding the Fourth Proportional to 407,189.08, 561,921.06 and 228,341.08
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Solution
The fourth proportional to 407,189.08, 561,921.06 and 228,341.08 is: 315,110.76
Step by Step Solution
- Step 1: Write the proportion equation
407,189.08 : 561,921.06 = 228,341.08 : x - Step 2: Convert to fraction form
407,189.08/561,921.06 = 228,341.08/x - Step 3: Cross multiply
407,189.08x = 561,921.06 × 228,341.08 - Step 4: Simplify right side
407,189.08x = 128,309,661,715.15 - Step 5: Solve for x
x = 128,309,661,715.15/407,189.08 - Step 6: Final answer
x = 315,110.76
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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.