Finding the Fourth Proportional to 208,464,530.28, 287,715,538.38 and 115,674,931.68
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Solution
The fourth proportional to 208,464,530.28, 287,715,538.38 and 115,674,931.68 is: 159,650,541.99
Step by Step Solution
- Step 1: Write the proportion equation
208,464,530.28 : 287,715,538.38 = 115,674,931.68 : x - Step 2: Convert to fraction form
208,464,530.28/287,715,538.38 = 115,674,931.68/x - Step 3: Cross multiply
208,464,530.28x = 287,715,538.38 × 115,674,931.68 - Step 4: Simplify right side
208,464,530.28x = 33,281,475,245,380,920 - Step 5: Solve for x
x = 33,281,475,245,380,920/208,464,530.28 - Step 6: Final answer
x = 159,650,541.99
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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.