Finding the Fourth Proportional to 318,140.09, 438,887.02 and 281,878.26
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Solution
The fourth proportional to 318,140.09, 438,887.02 and 281,878.26 is: 388,862.37
Step by Step Solution
- Step 1: Write the proportion equation
318,140.09 : 438,887.02 = 281,878.26 : x - Step 2: Convert to fraction form
318,140.09/438,887.02 = 281,878.26/x - Step 3: Cross multiply
318,140.09x = 438,887.02 × 281,878.26 - Step 4: Simplify right side
318,140.09x = 123,712,708,829.49 - Step 5: Solve for x
x = 123,712,708,829.49/318,140.09 - Step 6: Final answer
x = 388,862.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.