Finding the Fourth Proportional to 143,319.61, 214,984.26 and 38,138.68
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Solution
The fourth proportional to 143,319.61, 214,984.26 and 38,138.68 is: 57,209.31
Step by Step Solution
- Step 1: Write the proportion equation
143,319.61 : 214,984.26 = 38,138.68 : x - Step 2: Convert to fraction form
143,319.61/214,984.26 = 38,138.68/x - Step 3: Cross multiply
143,319.61x = 214,984.26 × 38,138.68 - Step 4: Simplify right side
143,319.61x = 8,199,215,897.18 - Step 5: Solve for x
x = 8,199,215,897.18/143,319.61 - Step 6: Final answer
x = 57,209.31
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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.