Finding the Fourth Proportional to 261,973.80, 392,960.70 and 122,005.80
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Solution
The fourth proportional to 261,973.80, 392,960.70 and 122,005.80 is: 183,008.70
Step by Step Solution
- Step 1: Write the proportion equation
261,973.80 : 392,960.70 = 122,005.80 : x - Step 2: Convert to fraction form
261,973.80/392,960.70 = 122,005.80/x - Step 3: Cross multiply
261,973.80x = 392,960.70 × 122,005.80 - Step 4: Simplify right side
261,973.80x = 47,943,484,572.06 - Step 5: Solve for x
x = 47,943,484,572.06/261,973.80 - Step 6: Final answer
x = 183,008.70
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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.