Finding the Fourth Proportional to 387,871,544.48, 535,274,035.34 and 211,670,889.21
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Solution
The fourth proportional to 387,871,544.48, 535,274,035.34 and 211,670,889.21 is: 292,111,995.95
Step by Step Solution
- Step 1: Write the proportion equation
387,871,544.48 : 535,274,035.34 = 211,670,889.21 : x - Step 2: Convert to fraction form
387,871,544.48/535,274,035.34 = 211,670,889.21/x - Step 3: Cross multiply
387,871,544.48x = 535,274,035.34 × 211,670,889.21 - Step 4: Simplify right side
387,871,544.48x = 113,301,931,030,384,416 - Step 5: Solve for x
x = 113,301,931,030,384,416/387,871,544.48 - Step 6: Final answer
x = 292,111,995.95
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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.