Finding the Fourth Proportional to 257,698.36, 386,583.99 and 80,223.31
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Solution
The fourth proportional to 257,698.36, 386,583.99 and 80,223.31 is: 120,346.31
Step by Step Solution
- Step 1: Write the proportion equation
257,698.36 : 386,583.99 = 80,223.31 : x - Step 2: Convert to fraction form
257,698.36/386,583.99 = 80,223.31/x - Step 3: Cross multiply
257,698.36x = 386,583.99 × 80,223.31 - Step 4: Simplify right side
257,698.36x = 31,013,047,270.81 - Step 5: Solve for x
x = 31,013,047,270.81/257,698.36 - Step 6: Final answer
x = 120,346.31
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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.