Finding the Fourth Proportional to 438,435.36, 657,704.88 and 138,929.76
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Solution
The fourth proportional to 438,435.36, 657,704.88 and 138,929.76 is: 208,411.07
Step by Step Solution
- Step 1: Write the proportion equation
438,435.36 : 657,704.88 = 138,929.76 : x - Step 2: Convert to fraction form
438,435.36/657,704.88 = 138,929.76/x - Step 3: Cross multiply
438,435.36x = 657,704.88 × 138,929.76 - Step 4: Simplify right side
438,435.36x = 91,374,781,129.23 - Step 5: Solve for x
x = 91,374,781,129.23/438,435.36 - Step 6: Final answer
x = 208,411.07
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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.