Finding the Fourth Proportional to 239,128,376.80, 358,755,550.80 and 85,758,440.80
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Solution
The fourth proportional to 239,128,376.80, 358,755,550.80 and 85,758,440.80 is: 128,660,249.68
Step by Step Solution
- Step 1: Write the proportion equation
239,128,376.80 : 358,755,550.80 = 85,758,440.80 : x - Step 2: Convert to fraction form
239,128,376.80/358,755,550.80 = 85,758,440.80/x - Step 3: Cross multiply
239,128,376.80x = 358,755,550.80 × 85,758,440.80 - Step 4: Simplify right side
239,128,376.80x = 30,766,316,664,953,192 - Step 5: Solve for x
x = 30,766,316,664,953,192/239,128,376.80 - Step 6: Final answer
x = 128,660,249.68
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1.5x scale
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.