Finding the Fourth Proportional to 258,294,795.28, 387,237,588.24 and 128,835,767.68
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Solution
The fourth proportional to 258,294,795.28, 387,237,588.24 and 128,835,767.68 is: 193,151,596.03
Step by Step Solution
- Step 1: Write the proportion equation
258,294,795.28 : 387,237,588.24 = 128,835,767.68 : x - Step 2: Convert to fraction form
258,294,795.28/387,237,588.24 = 128,835,767.68/x - Step 3: Cross multiply
258,294,795.28x = 387,237,588.24 × 128,835,767.68 - Step 4: Simplify right side
258,294,795.28x = 49,890,051,955,452,144 - Step 5: Solve for x
x = 49,890,051,955,452,144/258,294,795.28 - Step 6: Final answer
x = 193,151,596.03
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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.