Finding the Fourth Proportional to 640,883.70, 961,242.12 and 167,605.56
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Solution
The fourth proportional to 640,883.70, 961,242.12 and 167,605.56 is: 251,386.52
Step by Step Solution
- Step 1: Write the proportion equation
640,883.70 : 961,242.12 = 167,605.56 : x - Step 2: Convert to fraction form
640,883.70/961,242.12 = 167,605.56/x - Step 3: Cross multiply
640,883.70x = 961,242.12 × 167,605.56 - Step 4: Simplify right side
640,883.70x = 161,109,523,818.19 - Step 5: Solve for x
x = 161,109,523,818.19/640,883.70 - Step 6: Final answer
x = 251,386.52
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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.