Finding the Fourth Proportional to 358,036.80, 536,350.40 and 257,959.68
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Solution
The fourth proportional to 358,036.80, 536,350.40 and 257,959.68 is: 386,431.72
Step by Step Solution
- Step 1: Write the proportion equation
358,036.80 : 536,350.40 = 257,959.68 : x - Step 2: Convert to fraction form
358,036.80/536,350.40 = 257,959.68/x - Step 3: Cross multiply
358,036.80x = 536,350.40 × 257,959.68 - Step 4: Simplify right side
358,036.80x = 138,356,777,551.87 - Step 5: Solve for x
x = 138,356,777,551.87/358,036.80 - Step 6: Final answer
x = 386,431.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.