Finding the Fourth Proportional to 358,128,220.80, 537,192,331.20 and 128,104,809.60
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Solution
The fourth proportional to 358,128,220.80, 537,192,331.20 and 128,104,809.60 is: 192,157,214.40
Step by Step Solution
- Step 1: Write the proportion equation
358,128,220.80 : 537,192,331.20 = 128,104,809.60 : x - Step 2: Convert to fraction form
358,128,220.80/537,192,331.20 = 128,104,809.60/x - Step 3: Cross multiply
358,128,220.80x = 537,192,331.20 × 128,104,809.60 - Step 4: Simplify right side
358,128,220.80x = 68,816,921,306,956,144 - Step 5: Solve for x
x = 68,816,921,306,956,144/358,128,220.80 - Step 6: Final answer
x = 192,157,214.40
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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.