Finding the Fourth Proportional to 212,013.99, 292,404.06 and 143,919.05
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Solution
The fourth proportional to 212,013.99, 292,404.06 and 143,919.05 is: 198,489.32
Step by Step Solution
- Step 1: Write the proportion equation
212,013.99 : 292,404.06 = 143,919.05 : x - Step 2: Convert to fraction form
212,013.99/292,404.06 = 143,919.05/x - Step 3: Cross multiply
212,013.99x = 292,404.06 × 143,919.05 - Step 4: Simplify right side
212,013.99x = 42,082,513,069.32 - Step 5: Solve for x
x = 42,082,513,069.32/212,013.99 - Step 6: Final answer
x = 198,489.32
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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.