Finding the Fourth Proportional to 202,107,277.21, 278,909,710.69 and 111,583,683.99
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Solution
The fourth proportional to 202,107,277.21, 278,909,710.69 and 111,583,683.99 is: 153,986,404.89
Step by Step Solution
- Step 1: Write the proportion equation
202,107,277.21 : 278,909,710.69 = 111,583,683.99 : x - Step 2: Convert to fraction form
202,107,277.21/278,909,710.69 = 111,583,683.99/x - Step 3: Cross multiply
202,107,277.21x = 278,909,710.69 × 111,583,683.99 - Step 4: Simplify right side
202,107,277.21x = 31,121,773,019,375,284 - Step 5: Solve for x
x = 31,121,773,019,375,284/202,107,277.21 - Step 6: Final answer
x = 153,986,404.89
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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.