Finding the Fourth Proportional to 320,451.18, 478,586.35 and 272,555.88
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Solution
The fourth proportional to 320,451.18, 478,586.35 and 272,555.88 is: 407,055.84
Step by Step Solution
- Step 1: Write the proportion equation
320,451.18 : 478,586.35 = 272,555.88 : x - Step 2: Convert to fraction form
320,451.18/478,586.35 = 272,555.88/x - Step 3: Cross multiply
320,451.18x = 478,586.35 × 272,555.88 - Step 4: Simplify right side
320,451.18x = 130,441,523,780.24 - Step 5: Solve for x
x = 130,441,523,780.24/320,451.18 - Step 6: Final answer
x = 407,055.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.