Finding the Fourth Proportional to 242,813.12, 335,135.88 and 157,782.56
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Solution
The fourth proportional to 242,813.12, 335,135.88 and 157,782.56 is: 217,774.88
Step by Step Solution
- Step 1: Write the proportion equation
242,813.12 : 335,135.88 = 157,782.56 : x - Step 2: Convert to fraction form
242,813.12/335,135.88 = 157,782.56/x - Step 3: Cross multiply
242,813.12x = 335,135.88 × 157,782.56 - Step 4: Simplify right side
242,813.12x = 52,878,597,094.25 - Step 5: Solve for x
x = 52,878,597,094.25/242,813.12 - Step 6: Final answer
x = 217,774.88
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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.