Finding the Fourth Proportional to 245,473.74, 338,750.10 and 138,043.85
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Solution
The fourth proportional to 245,473.74, 338,750.10 and 138,043.85 is: 190,498.45
Step by Step Solution
- Step 1: Write the proportion equation
245,473.74 : 338,750.10 = 138,043.85 : x - Step 2: Convert to fraction form
245,473.74/338,750.10 = 138,043.85/x - Step 3: Cross multiply
245,473.74x = 338,750.10 × 138,043.85 - Step 4: Simplify right side
245,473.74x = 46,762,366,298.13 - Step 5: Solve for x
x = 46,762,366,298.13/245,473.74 - Step 6: Final answer
x = 190,498.45
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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.