Finding the Fourth Proportional to 211,028,348.52, 291,235,276.80 and 132,778,975.68
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Solution
The fourth proportional to 211,028,348.52, 291,235,276.80 and 132,778,975.68 is: 183,245,151.69
Step by Step Solution
- Step 1: Write the proportion equation
211,028,348.52 : 291,235,276.80 = 132,778,975.68 : x - Step 2: Convert to fraction form
211,028,348.52/291,235,276.80 = 132,778,975.68/x - Step 3: Cross multiply
211,028,348.52x = 291,235,276.80 × 132,778,975.68 - Step 4: Simplify right side
211,028,348.52x = 38,669,921,735,385,272 - Step 5: Solve for x
x = 38,669,921,735,385,272/211,028,348.52 - Step 6: Final answer
x = 183,245,151.69
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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.