Finding the Fourth Proportional to 461,278.75, 692,034.78 and 128,854.75
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Solution
The fourth proportional to 461,278.75, 692,034.78 and 128,854.75 is: 193,314.71
Step by Step Solution
- Step 1: Write the proportion equation
461,278.75 : 692,034.78 = 128,854.75 : x - Step 2: Convert to fraction form
461,278.75/692,034.78 = 128,854.75/x - Step 3: Cross multiply
461,278.75x = 692,034.78 × 128,854.75 - Step 4: Simplify right side
461,278.75x = 89,171,968,568.21 - Step 5: Solve for x
x = 89,171,968,568.21/461,278.75 - Step 6: Final answer
x = 193,314.71
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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.