Finding the Fourth Proportional to 213,155.88, 319,726.50 and 55,385.70
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Solution
The fourth proportional to 213,155.88, 319,726.50 and 55,385.70 is: 83,076.65
Step by Step Solution
- Step 1: Write the proportion equation
213,155.88 : 319,726.50 = 55,385.70 : x - Step 2: Convert to fraction form
213,155.88/319,726.50 = 55,385.70/x - Step 3: Cross multiply
213,155.88x = 319,726.50 × 55,385.70 - Step 4: Simplify right side
213,155.88x = 17,708,276,011.05 - Step 5: Solve for x
x = 17,708,276,011.05/213,155.88 - Step 6: Final answer
x = 83,076.65
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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.