Finding the Fourth Proportional to 285,457.64, 393,955.58 and 158,145.08
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Solution
The fourth proportional to 285,457.64, 393,955.58 and 158,145.08 is: 218,253.53
Step by Step Solution
- Step 1: Write the proportion equation
285,457.64 : 393,955.58 = 158,145.08 : x - Step 2: Convert to fraction form
285,457.64/393,955.58 = 158,145.08/x - Step 3: Cross multiply
285,457.64x = 393,955.58 × 158,145.08 - Step 4: Simplify right side
285,457.64x = 62,302,135,141.13 - Step 5: Solve for x
x = 62,302,135,141.13/285,457.64 - Step 6: Final answer
x = 218,253.53
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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.