Finding the Fourth Proportional to 473,138.80, 709,708.20 and 305,177.20
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Solution
The fourth proportional to 473,138.80, 709,708.20 and 305,177.20 is: 457,765.80
Step by Step Solution
- Step 1: Write the proportion equation
473,138.80 : 709,708.20 = 305,177.20 : x - Step 2: Convert to fraction form
473,138.80/709,708.20 = 305,177.20/x - Step 3: Cross multiply
473,138.80x = 709,708.20 × 305,177.20 - Step 4: Simplify right side
473,138.80x = 216,586,761,293.04 - Step 5: Solve for x
x = 216,586,761,293.04/473,138.80 - Step 6: Final answer
x = 457,765.80
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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.