Finding the Fourth Proportional to 517,462.30, 776,138.84 and 138,421.29
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Solution
The fourth proportional to 517,462.30, 776,138.84 and 138,421.29 is: 207,617.33
Step by Step Solution
- Step 1: Write the proportion equation
517,462.30 : 776,138.84 = 138,421.29 : x - Step 2: Convert to fraction form
517,462.30/776,138.84 = 138,421.29/x - Step 3: Cross multiply
517,462.30x = 776,138.84 × 138,421.29 - Step 4: Simplify right side
517,462.30x = 107,434,142,189.40 - Step 5: Solve for x
x = 107,434,142,189.40/517,462.30 - Step 6: Final answer
x = 207,617.33
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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.