Finding the Fourth Proportional to 307,813.70, 461,720.55 and 208,021.70
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Solution
The fourth proportional to 307,813.70, 461,720.55 and 208,021.70 is: 312,032.55
Step by Step Solution
- Step 1: Write the proportion equation
307,813.70 : 461,720.55 = 208,021.70 : x - Step 2: Convert to fraction form
307,813.70/461,720.55 = 208,021.70/x - Step 3: Cross multiply
307,813.70x = 461,720.55 × 208,021.70 - Step 4: Simplify right side
307,813.70x = 96,047,893,735.94 - Step 5: Solve for x
x = 96,047,893,735.94/307,813.70 - Step 6: Final answer
x = 312,032.55
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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.