Finding the Fourth Proportional to 339,162.80, 508,816.16 and 128,796.08
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Solution
The fourth proportional to 339,162.80, 508,816.16 and 128,796.08 is: 193,221.45
Step by Step Solution
- Step 1: Write the proportion equation
339,162.80 : 508,816.16 = 128,796.08 : x - Step 2: Convert to fraction form
339,162.80/508,816.16 = 128,796.08/x - Step 3: Cross multiply
339,162.80x = 508,816.16 × 128,796.08 - Step 4: Simplify right side
339,162.80x = 65,533,526,848.65 - Step 5: Solve for x
x = 65,533,526,848.65/339,162.80 - Step 6: Final answer
x = 193,221.45
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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.