Finding the Fourth Proportional to 211,548,341.40, 317,322,512.10 and 120,681,115.80
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Solution
The fourth proportional to 211,548,341.40, 317,322,512.10 and 120,681,115.80 is: 181,021,673.70
Step by Step Solution
- Step 1: Write the proportion equation
211,548,341.40 : 317,322,512.10 = 120,681,115.80 : x - Step 2: Convert to fraction form
211,548,341.40/317,322,512.10 = 120,681,115.80/x - Step 3: Cross multiply
211,548,341.40x = 317,322,512.10 × 120,681,115.80 - Step 4: Simplify right side
211,548,341.40x = 38,294,834,828,687,000 - Step 5: Solve for x
x = 38,294,834,828,687,000/211,548,341.40 - Step 6: Final answer
x = 181,021,673.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.