Finding the Fourth Proportional to 217,438.08, 299,937.12 and 136,737.60
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Solution
The fourth proportional to 217,438.08, 299,937.12 and 136,737.60 is: 188,617.75
Step by Step Solution
- Step 1: Write the proportion equation
217,438.08 : 299,937.12 = 136,737.60 : x - Step 2: Convert to fraction form
217,438.08/299,937.12 = 136,737.60/x - Step 3: Cross multiply
217,438.08x = 299,937.12 × 136,737.60 - Step 4: Simplify right side
217,438.08x = 41,012,681,939.71 - Step 5: Solve for x
x = 41,012,681,939.71/217,438.08 - Step 6: Final answer
x = 188,617.75
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1.5x scale
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.