Finding the Fourth Proportional to 309,684.60, 427,455.63 and 202,271.31
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Solution
The fourth proportional to 309,684.60, 427,455.63 and 202,271.31 is: 279,193.77
Step by Step Solution
- Step 1: Write the proportion equation
309,684.60 : 427,455.63 = 202,271.31 : x - Step 2: Convert to fraction form
309,684.60/427,455.63 = 202,271.31/x - Step 3: Cross multiply
309,684.60x = 427,455.63 × 202,271.31 - Step 4: Simplify right side
309,684.60x = 86,462,010,246.98 - Step 5: Solve for x
x = 86,462,010,246.98/309,684.60 - Step 6: Final answer
x = 279,193.77
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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.