Finding the Fourth Proportional to 405,410.68, 608,130.74 and 139,169.62
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Solution
The fourth proportional to 405,410.68, 608,130.74 and 139,169.62 is: 208,759.48
Step by Step Solution
- Step 1: Write the proportion equation
405,410.68 : 608,130.74 = 139,169.62 : x - Step 2: Convert to fraction form
405,410.68/608,130.74 = 139,169.62/x - Step 3: Cross multiply
405,410.68x = 608,130.74 × 139,169.62 - Step 4: Simplify right side
405,410.68x = 84,633,323,996.12 - Step 5: Solve for x
x = 84,633,323,996.12/405,410.68 - Step 6: Final answer
x = 208,759.48
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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.