Finding the Fourth Proportional to 211,028,274.42, 291,235,174.49 and 132,778,901.58
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Solution
The fourth proportional to 211,028,274.42, 291,235,174.49 and 132,778,901.58 is: 183,245,049.40
Step by Step Solution
- Step 1: Write the proportion equation
211,028,274.42 : 291,235,174.49 = 132,778,901.58 : x - Step 2: Convert to fraction form
211,028,274.42/291,235,174.49 = 132,778,901.58/x - Step 3: Cross multiply
211,028,274.42x = 291,235,174.49 × 132,778,901.58 - Step 4: Simplify right side
211,028,274.42x = 38,669,886,570,241,840 - Step 5: Solve for x
x = 38,669,886,570,241,840/211,028,274.42 - Step 6: Final answer
x = 183,245,049.40
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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.