Finding the Fourth Proportional to 309,613,320.74, 427,170,193.66 and 175,629,155.03
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Solution
The fourth proportional to 309,613,320.74, 427,170,193.66 and 175,629,155.03 is: 242,313,670.44
Step by Step Solution
- Step 1: Write the proportion equation
309,613,320.74 : 427,170,193.66 = 175,629,155.03 : x - Step 2: Convert to fraction form
309,613,320.74/427,170,193.66 = 175,629,155.03/x - Step 3: Cross multiply
309,613,320.74x = 427,170,193.66 × 175,629,155.03 - Step 4: Simplify right side
309,613,320.74x = 75,023,540,166,507,264 - Step 5: Solve for x
x = 75,023,540,166,507,264/309,613,320.74 - Step 6: Final answer
x = 242,313,670.44
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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.