Finding the Fourth Proportional to 253,536,779.18, 380,330,855.09 and 87,518,645.79
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Solution
The fourth proportional to 253,536,779.18, 380,330,855.09 and 87,518,645.79 is: 131,286,835.38
Step by Step Solution
- Step 1: Write the proportion equation
253,536,779.18 : 380,330,855.09 = 87,518,645.79 : x - Step 2: Convert to fraction form
253,536,779.18/380,330,855.09 = 87,518,645.79/x - Step 3: Cross multiply
253,536,779.18x = 380,330,855.09 × 87,518,645.79 - Step 4: Simplify right side
253,536,779.18x = 33,286,041,389,191,936 - Step 5: Solve for x
x = 33,286,041,389,191,936/253,536,779.18 - Step 6: Final answer
x = 131,286,835.38
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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.