Finding the Fourth Proportional to 289,448.12, 399,438.41 and 176,270.87
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Solution
The fourth proportional to 289,448.12, 399,438.41 and 176,270.87 is: 243,253.80
Step by Step Solution
- Step 1: Write the proportion equation
289,448.12 : 399,438.41 = 176,270.87 : x - Step 2: Convert to fraction form
289,448.12/399,438.41 = 176,270.87/x - Step 3: Cross multiply
289,448.12x = 399,438.41 × 176,270.87 - Step 4: Simplify right side
289,448.12x = 70,409,355,969.47 - Step 5: Solve for x
x = 70,409,355,969.47/289,448.12 - Step 6: Final answer
x = 243,253.80
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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.