Finding the Fourth Proportional to 438,645.80, 657,968.70 and 106,221.80
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Solution
The fourth proportional to 438,645.80, 657,968.70 and 106,221.80 is: 159,332.70
Step by Step Solution
- Step 1: Write the proportion equation
438,645.80 : 657,968.70 = 106,221.80 : x - Step 2: Convert to fraction form
438,645.80/657,968.70 = 106,221.80/x - Step 3: Cross multiply
438,645.80x = 657,968.70 × 106,221.80 - Step 4: Simplify right side
438,645.80x = 69,890,619,657.66 - Step 5: Solve for x
x = 69,890,619,657.66/438,645.80 - Step 6: Final answer
x = 159,332.70
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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.