Finding the Fourth Proportional to 438,437.60, 657,656.40 and 202,241.60
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Solution
The fourth proportional to 438,437.60, 657,656.40 and 202,241.60 is: 303,362.40
Step by Step Solution
- Step 1: Write the proportion equation
438,437.60 : 657,656.40 = 202,241.60 : x - Step 2: Convert to fraction form
438,437.60/657,656.40 = 202,241.60/x - Step 3: Cross multiply
438,437.60x = 657,656.40 × 202,241.60 - Step 4: Simplify right side
438,437.60x = 133,005,482,586.24 - Step 5: Solve for x
x = 133,005,482,586.24/438,437.60 - Step 6: Final answer
x = 303,362.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.