Finding the Fourth Proportional to 420,943.66, 631,323.19 and 121,359.14
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Solution
The fourth proportional to 420,943.66, 631,323.19 and 121,359.14 is: 182,012.09
Step by Step Solution
- Step 1: Write the proportion equation
420,943.66 : 631,323.19 = 121,359.14 : x - Step 2: Convert to fraction form
420,943.66/631,323.19 = 121,359.14/x - Step 3: Cross multiply
420,943.66x = 631,323.19 × 121,359.14 - Step 4: Simplify right side
420,943.66x = 76,616,836,646.08 - Step 5: Solve for x
x = 76,616,836,646.08/420,943.66 - Step 6: Final answer
x = 182,012.09
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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.