Finding the Fourth Proportional to 228,311.87, 315,153.99 and 137,671.65
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Solution
The fourth proportional to 228,311.87, 315,153.99 and 137,671.65 is: 190,037.30
Step by Step Solution
- Step 1: Write the proportion equation
228,311.87 : 315,153.99 = 137,671.65 : x - Step 2: Convert to fraction form
228,311.87/315,153.99 = 137,671.65/x - Step 3: Cross multiply
228,311.87x = 315,153.99 × 137,671.65 - Step 4: Simplify right side
228,311.87x = 43,387,769,807.38 - Step 5: Solve for x
x = 43,387,769,807.38/228,311.87 - Step 6: Final answer
x = 190,037.30
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.