Finding the Fourth Proportional to 211,358.16, 291,704.29 and 130,811.63
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Solution
The fourth proportional to 211,358.16, 291,704.29 and 130,811.63 is: 180,538.63
Step by Step Solution
- Step 1: Write the proportion equation
211,358.16 : 291,704.29 = 130,811.63 : x - Step 2: Convert to fraction form
211,358.16/291,704.29 = 130,811.63/x - Step 3: Cross multiply
211,358.16x = 291,704.29 × 130,811.63 - Step 4: Simplify right side
211,358.16x = 38,158,311,867.34 - Step 5: Solve for x
x = 38,158,311,867.34/211,358.16 - Step 6: Final answer
x = 180,538.63
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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.