Finding the Fourth Proportional to 517,461.74, 776,137.99 and 138,420.72
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Solution
The fourth proportional to 517,461.74, 776,137.99 and 138,420.72 is: 207,616.47
Step by Step Solution
- Step 1: Write the proportion equation
517,461.74 : 776,137.99 = 138,420.72 : x - Step 2: Convert to fraction form
517,461.74/776,137.99 = 138,420.72/x - Step 3: Cross multiply
517,461.74x = 776,137.99 × 138,420.72 - Step 4: Simplify right side
517,461.74x = 107,433,579,395.15 - Step 5: Solve for x
x = 107,433,579,395.15/517,461.74 - Step 6: Final answer
x = 207,616.47
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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.