Finding the Fourth Proportional to 438,431.70, 657,647.55 and 157,847.70
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Solution
The fourth proportional to 438,431.70, 657,647.55 and 157,847.70 is: 236,771.55
Step by Step Solution
- Step 1: Write the proportion equation
438,431.70 : 657,647.55 = 157,847.70 : x - Step 2: Convert to fraction form
438,431.70/657,647.55 = 157,847.70/x - Step 3: Cross multiply
438,431.70x = 657,647.55 × 157,847.70 - Step 4: Simplify right side
438,431.70x = 103,808,153,178.14 - Step 5: Solve for x
x = 103,808,153,178.14/438,431.70 - Step 6: Final answer
x = 236,771.55
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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.