Finding the Fourth Proportional to 304,903.80, 457,355.70 and 138,691.80
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Solution
The fourth proportional to 304,903.80, 457,355.70 and 138,691.80 is: 208,037.70
Step by Step Solution
- Step 1: Write the proportion equation
304,903.80 : 457,355.70 = 138,691.80 : x - Step 2: Convert to fraction form
304,903.80/457,355.70 = 138,691.80/x - Step 3: Cross multiply
304,903.80x = 457,355.70 × 138,691.80 - Step 4: Simplify right side
304,903.80x = 63,431,485,273.26 - Step 5: Solve for x
x = 63,431,485,273.26/304,903.80 - Step 6: Final answer
x = 208,037.70
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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.