Finding the Fourth Proportional to 397,826,986.96, 549,018,173.10 and 221,614,769.08
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Solution
The fourth proportional to 397,826,986.96, 549,018,173.10 and 221,614,769.08 is: 305,837,813.02
Step by Step Solution
- Step 1: Write the proportion equation
397,826,986.96 : 549,018,173.10 = 221,614,769.08 : x - Step 2: Convert to fraction form
397,826,986.96/549,018,173.10 = 221,614,769.08/x - Step 3: Cross multiply
397,826,986.96x = 549,018,173.10 × 221,614,769.08 - Step 4: Simplify right side
397,826,986.96x = 121,670,535,652,279,984 - Step 5: Solve for x
x = 121,670,535,652,279,984/397,826,986.96 - Step 6: Final answer
x = 305,837,813.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.