Finding the Fourth Proportional to 318,986,235.96, 478,479,354.21 and 76,649,139.96
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Solution
The fourth proportional to 318,986,235.96, 478,479,354.21 and 76,649,139.96 is: 114,973,710.00
Step by Step Solution
- Step 1: Write the proportion equation
318,986,235.96 : 478,479,354.21 = 76,649,139.96 : x - Step 2: Convert to fraction form
318,986,235.96/478,479,354.21 = 76,649,139.96/x - Step 3: Cross multiply
318,986,235.96x = 478,479,354.21 × 76,649,139.96 - Step 4: Simplify right side
318,986,235.96x = 36,675,030,988,812,704 - Step 5: Solve for x
x = 36,675,030,988,812,704/318,986,235.96 - Step 6: Final answer
x = 114,973,710.00
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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.