Finding the Fourth Proportional to 420,535.11, 580,333.35 and 239,246.63
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Solution
The fourth proportional to 420,535.11, 580,333.35 and 239,246.63 is: 330,157.44
Step by Step Solution
- Step 1: Write the proportion equation
420,535.11 : 580,333.35 = 239,246.63 : x - Step 2: Convert to fraction form
420,535.11/580,333.35 = 239,246.63/x - Step 3: Cross multiply
420,535.11x = 580,333.35 × 239,246.63 - Step 4: Simplify right side
420,535.11x = 138,842,795,362.44 - Step 5: Solve for x
x = 138,842,795,362.44/420,535.11 - Step 6: Final answer
x = 330,157.44
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.