Finding the Fourth Proportional to 309,896.59, 464,783.68 and 85,199.08
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Solution
The fourth proportional to 309,896.59, 464,783.68 and 85,199.08 is: 127,781.79
Step by Step Solution
- Step 1: Write the proportion equation
309,896.59 : 464,783.68 = 85,199.08 : x - Step 2: Convert to fraction form
309,896.59/464,783.68 = 85,199.08/x - Step 3: Cross multiply
309,896.59x = 464,783.68 × 85,199.08 - Step 4: Simplify right side
309,896.59x = 39,599,141,935.01 - Step 5: Solve for x
x = 39,599,141,935.01/309,896.59 - Step 6: Final answer
x = 127,781.79
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1.5x scale
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.