Finding the Fourth Proportional to 313,487.80, 470,231.70 and 91,871.80
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Solution
The fourth proportional to 313,487.80, 470,231.70 and 91,871.80 is: 137,807.70
Step by Step Solution
- Step 1: Write the proportion equation
313,487.80 : 470,231.70 = 91,871.80 : x - Step 2: Convert to fraction form
313,487.80/470,231.70 = 91,871.80/x - Step 3: Cross multiply
313,487.80x = 470,231.70 × 91,871.80 - Step 4: Simplify right side
313,487.80x = 43,201,032,696.06 - Step 5: Solve for x
x = 43,201,032,696.06/313,487.80 - Step 6: Final answer
x = 137,807.70
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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.