Finding the Fourth Proportional to 405,219.31, 559,204.36 and 221,461.63
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Solution
The fourth proportional to 405,219.31, 559,204.36 and 221,461.63 is: 305,617.98
Step by Step Solution
- Step 1: Write the proportion equation
405,219.31 : 559,204.36 = 221,461.63 : x - Step 2: Convert to fraction form
405,219.31/559,204.36 = 221,461.63/x - Step 3: Cross multiply
405,219.31x = 559,204.36 × 221,461.63 - Step 4: Simplify right side
405,219.31x = 123,842,307,117.04 - Step 5: Solve for x
x = 123,842,307,117.04/405,219.31 - Step 6: Final answer
x = 305,617.98
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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.