Finding the Fourth Proportional to 243,420.08, 335,919.68 and 135,990.14
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Solution
The fourth proportional to 243,420.08, 335,919.68 and 135,990.14 is: 187,666.38
Step by Step Solution
- Step 1: Write the proportion equation
243,420.08 : 335,919.68 = 135,990.14 : x - Step 2: Convert to fraction form
243,420.08/335,919.68 = 135,990.14/x - Step 3: Cross multiply
243,420.08x = 335,919.68 × 135,990.14 - Step 4: Simplify right side
243,420.08x = 45,681,764,311.96 - Step 5: Solve for x
x = 45,681,764,311.96/243,420.08 - Step 6: Final answer
x = 187,666.38
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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.