Finding the Fourth Proportional to 289,783.09, 399,862.58 and 160,720.02
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Solution
The fourth proportional to 289,783.09, 399,862.58 and 160,720.02 is: 221,772.51
Step by Step Solution
- Step 1: Write the proportion equation
289,783.09 : 399,862.58 = 160,720.02 : x - Step 2: Convert to fraction form
289,783.09/399,862.58 = 160,720.02/x - Step 3: Cross multiply
289,783.09x = 399,862.58 × 160,720.02 - Step 4: Simplify right side
289,783.09x = 64,265,921,854.85 - Step 5: Solve for x
x = 64,265,921,854.85/289,783.09 - Step 6: Final answer
x = 221,772.51
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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.