Finding the Fourth Proportional to 165,280,127.20, 247,920,190.80 and 155,202,431.20
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Solution
The fourth proportional to 165,280,127.20, 247,920,190.80 and 155,202,431.20 is: 232,803,646.80
Step by Step Solution
- Step 1: Write the proportion equation
165,280,127.20 : 247,920,190.80 = 155,202,431.20 : x - Step 2: Convert to fraction form
165,280,127.20/247,920,190.80 = 155,202,431.20/x - Step 3: Cross multiply
165,280,127.20x = 247,920,190.80 × 155,202,431.20 - Step 4: Simplify right side
165,280,127.20x = 38,477,816,355,727,872 - Step 5: Solve for x
x = 38,477,816,355,727,872/165,280,127.20 - Step 6: Final answer
x = 232,803,646.80
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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.