Finding the Fourth Proportional to 405,402.56, 559,438.40 and 239,937.78
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Solution
The fourth proportional to 405,402.56, 559,438.40 and 239,937.78 is: 331,104.00
Step by Step Solution
- Step 1: Write the proportion equation
405,402.56 : 559,438.40 = 239,937.78 : x - Step 2: Convert to fraction form
405,402.56/559,438.40 = 239,937.78/x - Step 3: Cross multiply
405,402.56x = 559,438.40 × 239,937.78 - Step 4: Simplify right side
405,402.56x = 134,230,408,304.13 - Step 5: Solve for x
x = 134,230,408,304.13/405,402.56 - Step 6: Final answer
x = 331,104.00
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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.