Finding the Fourth Proportional to 399,257.71, 550,977.19 and 217,973.63
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Solution
The fourth proportional to 399,257.71, 550,977.19 and 217,973.63 is: 300,804.46
Step by Step Solution
- Step 1: Write the proportion equation
399,257.71 : 550,977.19 = 217,973.63 : x - Step 2: Convert to fraction form
399,257.71/550,977.19 = 217,973.63/x - Step 3: Cross multiply
399,257.71x = 550,977.19 × 217,973.63 - Step 4: Simplify right side
399,257.71x = 120,098,498,984.01 - Step 5: Solve for x
x = 120,098,498,984.01/399,257.71 - Step 6: Final answer
x = 300,804.46
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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.