Finding the Fourth Proportional to 245,579.88, 338,899.68 and 138,149.90
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Solution
The fourth proportional to 245,579.88, 338,899.68 and 138,149.90 is: 190,646.55
Step by Step Solution
- Step 1: Write the proportion equation
245,579.88 : 338,899.68 = 138,149.90 : x - Step 2: Convert to fraction form
245,579.88/338,899.68 = 138,149.90/x - Step 3: Cross multiply
245,579.88x = 338,899.68 × 138,149.90 - Step 4: Simplify right side
245,579.88x = 46,818,956,902.03 - Step 5: Solve for x
x = 46,818,956,902.03/245,579.88 - Step 6: Final answer
x = 190,646.55
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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.