Finding the Fourth Proportional to 420,535.80, 580,319.13 and 239,230.67
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Solution
The fourth proportional to 420,535.80, 580,319.13 and 239,230.67 is: 330,126.79
Step by Step Solution
- Step 1: Write the proportion equation
420,535.80 : 580,319.13 = 239,230.67 : x - Step 2: Convert to fraction form
420,535.80/580,319.13 = 239,230.67/x - Step 3: Cross multiply
420,535.80x = 580,319.13 × 239,230.67 - Step 4: Simplify right side
420,535.80x = 138,830,132,279.24 - Step 5: Solve for x
x = 138,830,132,279.24/420,535.80 - Step 6: Final answer
x = 330,126.79
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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.