Finding the Fourth Proportional to 419,158.18, 578,438.36 and 228,173.02
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Solution
The fourth proportional to 419,158.18, 578,438.36 and 228,173.02 is: 314,878.81
Step by Step Solution
- Step 1: Write the proportion equation
419,158.18 : 578,438.36 = 228,173.02 : x - Step 2: Convert to fraction form
419,158.18/578,438.36 = 228,173.02/x - Step 3: Cross multiply
419,158.18x = 578,438.36 × 228,173.02 - Step 4: Simplify right side
419,158.18x = 131,984,027,485.05 - Step 5: Solve for x
x = 131,984,027,485.05/419,158.18 - Step 6: Final answer
x = 314,878.81
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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.