Finding the Fourth Proportional to 291,920.41, 402,850.79 and 157,784.41
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Solution
The fourth proportional to 291,920.41, 402,850.79 and 157,784.41 is: 217,742.82
Step by Step Solution
- Step 1: Write the proportion equation
291,920.41 : 402,850.79 = 157,784.41 : x - Step 2: Convert to fraction form
291,920.41/402,850.79 = 157,784.41/x - Step 3: Cross multiply
291,920.41x = 402,850.79 × 157,784.41 - Step 4: Simplify right side
291,920.41x = 63,563,574,218.18 - Step 5: Solve for x
x = 63,563,574,218.18/291,920.41 - Step 6: Final answer
x = 217,742.82
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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.