Finding the Fourth Proportional to 400,037.19, 551,791.20 and 256,569.99
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Solution
The fourth proportional to 400,037.19, 551,791.20 and 256,569.99 is: 353,899.75
Step by Step Solution
- Step 1: Write the proportion equation
400,037.19 : 551,791.20 = 256,569.99 : x - Step 2: Convert to fraction form
400,037.19/551,791.20 = 256,569.99/x - Step 3: Cross multiply
400,037.19x = 551,791.20 × 256,569.99 - Step 4: Simplify right side
400,037.19x = 141,573,062,666.09 - Step 5: Solve for x
x = 141,573,062,666.09/400,037.19 - Step 6: Final answer
x = 353,899.75
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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.