Finding the Fourth Proportional to 286,368.21, 395,193.02 and 157,312.13
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Solution
The fourth proportional to 286,368.21, 395,193.02 and 157,312.13 is: 217,093.42
Step by Step Solution
- Step 1: Write the proportion equation
286,368.21 : 395,193.02 = 157,312.13 : x - Step 2: Convert to fraction form
286,368.21/395,193.02 = 157,312.13/x - Step 3: Cross multiply
286,368.21x = 395,193.02 × 157,312.13 - Step 4: Simplify right side
286,368.21x = 62,168,652,974.81 - Step 5: Solve for x
x = 62,168,652,974.81/286,368.21 - Step 6: Final answer
x = 217,093.42
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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.