Finding the Fourth Proportional to 387,089,121.36, 534,182,052.24 and 210,878,564.70
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Solution
The fourth proportional to 387,089,121.36, 534,182,052.24 and 210,878,564.70 is: 291,011,909.79
Step by Step Solution
- Step 1: Write the proportion equation
387,089,121.36 : 534,182,052.24 = 210,878,564.70 : x - Step 2: Convert to fraction form
387,089,121.36/534,182,052.24 = 210,878,564.70/x - Step 3: Cross multiply
387,089,121.36x = 534,182,052.24 × 210,878,564.70 - Step 4: Simplify right side
387,089,121.36x = 112,647,544,464,871,616 - Step 5: Solve for x
x = 112,647,544,464,871,616/387,089,121.36 - Step 6: Final answer
x = 291,011,909.79
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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.