Finding the Fourth Proportional to 261,344.12, 360,670.62 and 153,985.70
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Solution
The fourth proportional to 261,344.12, 360,670.62 and 153,985.70 is: 212,509.54
Step by Step Solution
- Step 1: Write the proportion equation
261,344.12 : 360,670.62 = 153,985.70 : x - Step 2: Convert to fraction form
261,344.12/360,670.62 = 153,985.70/x - Step 3: Cross multiply
261,344.12x = 360,670.62 × 153,985.70 - Step 4: Simplify right side
261,344.12x = 55,538,117,890.13 - Step 5: Solve for x
x = 55,538,117,890.13/261,344.12 - Step 6: Final answer
x = 212,509.54
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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.