Finding the Fourth Proportional to 420,313.68, 580,034.76 and 229,331.08
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Solution
The fourth proportional to 420,313.68, 580,034.76 and 229,331.08 is: 316,477.92
Step by Step Solution
- Step 1: Write the proportion equation
420,313.68 : 580,034.76 = 229,331.08 : x - Step 2: Convert to fraction form
420,313.68/580,034.76 = 229,331.08/x - Step 3: Cross multiply
420,313.68x = 580,034.76 × 229,331.08 - Step 4: Simplify right side
420,313.68x = 133,019,997,948.34 - Step 5: Solve for x
x = 133,019,997,948.34/420,313.68 - Step 6: Final answer
x = 316,477.92
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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.