Finding the Fourth Proportional to 438,332.89, 657,492.16 and 138,812.99
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Solution
The fourth proportional to 438,332.89, 657,492.16 and 138,812.99 is: 208,217.21
Step by Step Solution
- Step 1: Write the proportion equation
438,332.89 : 657,492.16 = 138,812.99 : x - Step 2: Convert to fraction form
438,332.89/657,492.16 = 138,812.99/x - Step 3: Cross multiply
438,332.89x = 657,492.16 × 138,812.99 - Step 4: Simplify right side
438,332.89x = 91,268,453,345.75 - Step 5: Solve for x
x = 91,268,453,345.75/438,332.89 - Step 6: Final answer
x = 208,217.21
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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.