Finding the Fourth Proportional to 420,979.15, 631,392.65 and 121,386.07
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Solution
The fourth proportional to 420,979.15, 631,392.65 and 121,386.07 is: 182,057.17
Step by Step Solution
- Step 1: Write the proportion equation
420,979.15 : 631,392.65 = 121,386.07 : x - Step 2: Convert to fraction form
420,979.15/631,392.65 = 121,386.07/x - Step 3: Cross multiply
420,979.15x = 631,392.65 × 121,386.07 - Step 4: Simplify right side
420,979.15x = 76,642,270,528.44 - Step 5: Solve for x
x = 76,642,270,528.44/420,979.15 - Step 6: Final answer
x = 182,057.17
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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.