Finding the Fourth Proportional to 211,170.84, 291,305.28 and 130,572.60
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Solution
The fourth proportional to 211,170.84, 291,305.28 and 130,572.60 is: 180,121.88
Step by Step Solution
- Step 1: Write the proportion equation
211,170.84 : 291,305.28 = 130,572.60 : x - Step 2: Convert to fraction form
211,170.84/291,305.28 = 130,572.60/x - Step 3: Cross multiply
211,170.84x = 291,305.28 × 130,572.60 - Step 4: Simplify right side
211,170.84x = 38,036,487,803.33 - Step 5: Solve for x
x = 38,036,487,803.33/211,170.84 - Step 6: Final answer
x = 180,121.88
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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.