Finding the Fourth Proportional to 420,961.28, 631,365.99 and 121,368.26
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Solution
The fourth proportional to 420,961.28, 631,365.99 and 121,368.26 is: 182,030.49
Step by Step Solution
- Step 1: Write the proportion equation
420,961.28 : 631,365.99 = 121,368.26 : x - Step 2: Convert to fraction form
420,961.28/631,365.99 = 121,368.26/x - Step 3: Cross multiply
420,961.28x = 631,365.99 × 121,368.26 - Step 4: Simplify right side
420,961.28x = 76,627,788,472.65 - Step 5: Solve for x
x = 76,627,788,472.65/420,961.28 - Step 6: Final answer
x = 182,030.49
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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.