Finding the Fourth Proportional to 420,293.21, 579,980.86 and 239,049.23
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Solution
The fourth proportional to 420,293.21, 579,980.86 and 239,049.23 is: 329,874.41
Step by Step Solution
- Step 1: Write the proportion equation
420,293.21 : 579,980.86 = 239,049.23 : x - Step 2: Convert to fraction form
420,293.21/579,980.86 = 239,049.23/x - Step 3: Cross multiply
420,293.21x = 579,980.86 × 239,049.23 - Step 4: Simplify right side
420,293.21x = 138,643,974,500.21 - Step 5: Solve for x
x = 138,643,974,500.21/420,293.21 - Step 6: Final answer
x = 329,874.41
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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.