Finding the Fourth Proportional to 428,887.24, 643,332.36 and 109,039.14
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Solution
The fourth proportional to 428,887.24, 643,332.36 and 109,039.14 is: 163,559.09
Step by Step Solution
- Step 1: Write the proportion equation
428,887.24 : 643,332.36 = 109,039.14 : x - Step 2: Convert to fraction form
428,887.24/643,332.36 = 109,039.14/x - Step 3: Cross multiply
428,887.24x = 643,332.36 × 109,039.14 - Step 4: Simplify right side
428,887.24x = 70,148,407,268.57 - Step 5: Solve for x
x = 70,148,407,268.57/428,887.24 - Step 6: Final answer
x = 163,559.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.