Finding the Fourth Proportional to 438,489.18, 657,830.97 and 138,987.63
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Solution
The fourth proportional to 438,489.18, 657,830.97 and 138,987.63 is: 208,512.25
Step by Step Solution
- Step 1: Write the proportion equation
438,489.18 : 657,830.97 = 138,987.63 : x - Step 2: Convert to fraction form
438,489.18/657,830.97 = 138,987.63/x - Step 3: Cross multiply
438,489.18x = 657,830.97 × 138,987.63 - Step 4: Simplify right side
438,489.18x = 91,430,367,460.90 - Step 5: Solve for x
x = 91,430,367,460.90/438,489.18 - Step 6: Final answer
x = 208,512.25
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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.