Finding the Fourth Proportional to 315,575,999.20, 473,363,998.80 and 186,245,567.20
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Solution
The fourth proportional to 315,575,999.20, 473,363,998.80 and 186,245,567.20 is: 279,368,350.80
Step by Step Solution
- Step 1: Write the proportion equation
315,575,999.20 : 473,363,998.80 = 186,245,567.20 : x - Step 2: Convert to fraction form
315,575,999.20/473,363,998.80 = 186,245,567.20/x - Step 3: Cross multiply
315,575,999.20x = 473,363,998.80 × 186,245,567.20 - Step 4: Simplify right side
315,575,999.20x = 88,161,946,448,566,112 - Step 5: Solve for x
x = 88,161,946,448,566,112/315,575,999.20 - Step 6: Final answer
x = 279,368,350.80
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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.