Finding the Fourth Proportional to 390,259.36, 585,122.72 and 207,917.44
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Solution
The fourth proportional to 390,259.36, 585,122.72 and 207,917.44 is: 311,734.27
Step by Step Solution
- Step 1: Write the proportion equation
390,259.36 : 585,122.72 = 207,917.44 : x - Step 2: Convert to fraction form
390,259.36/585,122.72 = 207,917.44/x - Step 3: Cross multiply
390,259.36x = 585,122.72 × 207,917.44 - Step 4: Simplify right side
390,259.36x = 121,657,218,028.24 - Step 5: Solve for x
x = 121,657,218,028.24/390,259.36 - Step 6: Final answer
x = 311,734.27
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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.