Finding the Fourth Proportional to 612,235,110.80, 918,352,666.20 and 248,990,157.20
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Solution
The fourth proportional to 612,235,110.80, 918,352,666.20 and 248,990,157.20 is: 373,485,235.80
Step by Step Solution
- Step 1: Write the proportion equation
612,235,110.80 : 918,352,666.20 = 248,990,157.20 : x - Step 2: Convert to fraction form
612,235,110.80/918,352,666.20 = 248,990,157.20/x - Step 3: Cross multiply
612,235,110.80x = 918,352,666.20 × 248,990,157.20 - Step 4: Simplify right side
612,235,110.80x = 228,660,774,722,177,120 - Step 5: Solve for x
x = 228,660,774,722,177,120/612,235,110.80 - Step 6: Final answer
x = 373,485,235.80
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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.