Finding the Fourth Proportional to 318,695,514.30, 478,043,271.45 and 189,236,486.70
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Solution
The fourth proportional to 318,695,514.30, 478,043,271.45 and 189,236,486.70 is: 283,854,730.05
Step by Step Solution
- Step 1: Write the proportion equation
318,695,514.30 : 478,043,271.45 = 189,236,486.70 : x - Step 2: Convert to fraction form
318,695,514.30/478,043,271.45 = 189,236,486.70/x - Step 3: Cross multiply
318,695,514.30x = 478,043,271.45 × 189,236,486.70 - Step 4: Simplify right side
318,695,514.30x = 90,463,229,179,772,400 - Step 5: Solve for x
x = 90,463,229,179,772,400/318,695,514.30 - Step 6: Final answer
x = 283,854,730.05
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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.