Finding the Fourth Proportional to 429,646.20, 643,487.64 and 205,163.88
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Solution
The fourth proportional to 429,646.20, 643,487.64 and 205,163.88 is: 307,277.06
Step by Step Solution
- Step 1: Write the proportion equation
429,646.20 : 643,487.64 = 205,163.88 : x - Step 2: Convert to fraction form
429,646.20/643,487.64 = 205,163.88/x - Step 3: Cross multiply
429,646.20x = 643,487.64 × 205,163.88 - Step 4: Simplify right side
429,646.20x = 132,020,420,954.44 - Step 5: Solve for x
x = 132,020,420,954.44/429,646.20 - Step 6: Final answer
x = 307,277.06
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.