Finding the Fourth Proportional to 300,921.40, 415,315.74 and 173,572.12
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Solution
The fourth proportional to 300,921.40, 415,315.74 and 173,572.12 is: 239,555.02
Step by Step Solution
- Step 1: Write the proportion equation
300,921.40 : 415,315.74 = 173,572.12 : x - Step 2: Convert to fraction form
300,921.40/415,315.74 = 173,572.12/x - Step 3: Cross multiply
300,921.40x = 415,315.74 × 173,572.12 - Step 4: Simplify right side
300,921.40x = 72,087,233,461.17 - Step 5: Solve for x
x = 72,087,233,461.17/300,921.40 - Step 6: Final answer
x = 239,555.02
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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.