Finding the Fourth Proportional to 438,426.66, 657,659.12 and 138,929.31
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Solution
The fourth proportional to 438,426.66, 657,659.12 and 138,929.31 is: 208,400.03
Step by Step Solution
- Step 1: Write the proportion equation
438,426.66 : 657,659.12 = 138,929.31 : x - Step 2: Convert to fraction form
438,426.66/657,659.12 = 138,929.31/x - Step 3: Cross multiply
438,426.66x = 657,659.12 × 138,929.31 - Step 4: Simplify right side
438,426.66x = 91,368,128,104.13 - Step 5: Solve for x
x = 91,368,128,104.13/438,426.66 - Step 6: Final answer
x = 208,400.03
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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.