Finding the Fourth Proportional to 420,278.03, 579,960.05 and 239,034.05
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Solution
The fourth proportional to 420,278.03, 579,960.05 and 239,034.05 is: 329,853.55
Step by Step Solution
- Step 1: Write the proportion equation
420,278.03 : 579,960.05 = 239,034.05 : x - Step 2: Convert to fraction form
420,278.03/579,960.05 = 239,034.05/x - Step 3: Cross multiply
420,278.03x = 579,960.05 × 239,034.05 - Step 4: Simplify right side
420,278.03x = 138,630,199,589.70 - Step 5: Solve for x
x = 138,630,199,589.70/420,278.03 - Step 6: Final answer
x = 329,853.55
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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.