Finding the Fourth Proportional to 318,657.12, 439,762.68 and 175,415.64
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Solution
The fourth proportional to 318,657.12, 439,762.68 and 175,415.64 is: 242,082.31
Step by Step Solution
- Step 1: Write the proportion equation
318,657.12 : 439,762.68 = 175,415.64 : x - Step 2: Convert to fraction form
318,657.12/439,762.68 = 175,415.64/x - Step 3: Cross multiply
318,657.12x = 439,762.68 × 175,415.64 - Step 4: Simplify right side
318,657.12x = 77,141,251,960.32 - Step 5: Solve for x
x = 77,141,251,960.32/318,657.12 - Step 6: Final answer
x = 242,082.31
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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.