Finding the Fourth Proportional to 207,729,473.76, 286,638,603.12 and 118,432,939.68
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Solution
The fourth proportional to 207,729,473.76, 286,638,603.12 and 118,432,939.68 is: 163,421,452.81
Step by Step Solution
- Step 1: Write the proportion equation
207,729,473.76 : 286,638,603.12 = 118,432,939.68 : x - Step 2: Convert to fraction form
207,729,473.76/286,638,603.12 = 118,432,939.68/x - Step 3: Cross multiply
207,729,473.76x = 286,638,603.12 × 118,432,939.68 - Step 4: Simplify right side
207,729,473.76x = 33,947,452,393,270,424 - Step 5: Solve for x
x = 33,947,452,393,270,424/207,729,473.76 - Step 6: Final answer
x = 163,421,452.81
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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.