Finding the Fourth Proportional to 285,277.68, 393,705.36 and 157,965.12
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Solution
The fourth proportional to 285,277.68, 393,705.36 and 157,965.12 is: 218,004.14
Step by Step Solution
- Step 1: Write the proportion equation
285,277.68 : 393,705.36 = 157,965.12 : x - Step 2: Convert to fraction form
285,277.68/393,705.36 = 157,965.12/x - Step 3: Cross multiply
285,277.68x = 393,705.36 × 157,965.12 - Step 4: Simplify right side
285,277.68x = 62,191,714,437.04 - Step 5: Solve for x
x = 62,191,714,437.04/285,277.68 - Step 6: Final answer
x = 218,004.14
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.