Finding the Fourth Proportional to 405,245.12, 607,860.96 and 155,981.12
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Solution
The fourth proportional to 405,245.12, 607,860.96 and 155,981.12 is: 233,969.09
Step by Step Solution
- Step 1: Write the proportion equation
405,245.12 : 607,860.96 = 155,981.12 : x - Step 2: Convert to fraction form
405,245.12/607,860.96 = 155,981.12/x - Step 3: Cross multiply
405,245.12x = 607,860.96 × 155,981.12 - Step 4: Simplify right side
405,245.12x = 94,814,833,345.08 - Step 5: Solve for x
x = 94,814,833,345.08/405,245.12 - Step 6: Final answer
x = 233,969.09
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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.