Finding the Fourth Proportional to 390,455,170.88, 585,077,243.84 and 226,285,737.92
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Solution
The fourth proportional to 390,455,170.88, 585,077,243.84 and 226,285,737.92 is: 339,077,686.09
Step by Step Solution
- Step 1: Write the proportion equation
390,455,170.88 : 585,077,243.84 = 226,285,737.92 : x - Step 2: Convert to fraction form
390,455,170.88/585,077,243.84 = 226,285,737.92/x - Step 3: Cross multiply
390,455,170.88x = 585,077,243.84 × 226,285,737.92 - Step 4: Simplify right side
390,455,170.88x = 132,394,635,862,534,176 - Step 5: Solve for x
x = 132,394,635,862,534,176/390,455,170.88 - Step 6: Final answer
x = 339,077,686.09
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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.