Finding the Fourth Proportional to 287,364,703.80, 431,047,055.70 and 126,121,567.80
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Solution
The fourth proportional to 287,364,703.80, 431,047,055.70 and 126,121,567.80 is: 189,182,351.70
Step by Step Solution
- Step 1: Write the proportion equation
287,364,703.80 : 431,047,055.70 = 126,121,567.80 : x - Step 2: Convert to fraction form
287,364,703.80/431,047,055.70 = 126,121,567.80/x - Step 3: Cross multiply
287,364,703.80x = 431,047,055.70 × 126,121,567.80 - Step 4: Simplify right side
287,364,703.80x = 54,364,330,460,457,920 - Step 5: Solve for x
x = 54,364,330,460,457,920/287,364,703.80 - Step 6: Final answer
x = 189,182,351.70
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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.