Finding the Fourth Proportional to 421,201.80, 631,802.70 and 185,005.80
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Solution
The fourth proportional to 421,201.80, 631,802.70 and 185,005.80 is: 277,508.70
Step by Step Solution
- Step 1: Write the proportion equation
421,201.80 : 631,802.70 = 185,005.80 : x - Step 2: Convert to fraction form
421,201.80/631,802.70 = 185,005.80/x - Step 3: Cross multiply
421,201.80x = 631,802.70 × 185,005.80 - Step 4: Simplify right side
421,201.80x = 116,887,163,955.66 - Step 5: Solve for x
x = 116,887,163,955.66/421,201.80 - Step 6: Final answer
x = 277,508.70
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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.