Finding the Fourth Proportional to 485,705.41, 728,117.05 and 169,990.09
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Solution
The fourth proportional to 485,705.41, 728,117.05 and 169,990.09 is: 254,830.77
Step by Step Solution
- Step 1: Write the proportion equation
485,705.41 : 728,117.05 = 169,990.09 : x - Step 2: Convert to fraction form
485,705.41/728,117.05 = 169,990.09/x - Step 3: Cross multiply
485,705.41x = 728,117.05 × 169,990.09 - Step 4: Simplify right side
485,705.41x = 123,772,682,860.04 - Step 5: Solve for x
x = 123,772,682,860.04/485,705.41 - Step 6: Final answer
x = 254,830.77
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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.