Finding the Fourth Proportional to 426,555.32, 640,226.58 and 216,340.88
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Solution
The fourth proportional to 426,555.32, 640,226.58 and 216,340.88 is: 324,710.95
Step by Step Solution
- Step 1: Write the proportion equation
426,555.32 : 640,226.58 = 216,340.88 : x - Step 2: Convert to fraction form
426,555.32/640,226.58 = 216,340.88/x - Step 3: Cross multiply
426,555.32x = 640,226.58 × 216,340.88 - Step 4: Simplify right side
426,555.32x = 138,507,181,716.59 - Step 5: Solve for x
x = 138,507,181,716.59/426,555.32 - Step 6: Final answer
x = 324,710.95
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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.