Finding the Fourth Proportional to 420,408.81, 580,183.08 and 236,710.65
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Solution
The fourth proportional to 420,408.81, 580,183.08 and 236,710.65 is: 326,671.35
Step by Step Solution
- Step 1: Write the proportion equation
420,408.81 : 580,183.08 = 236,710.65 : x - Step 2: Convert to fraction form
420,408.81/580,183.08 = 236,710.65/x - Step 3: Cross multiply
420,408.81x = 580,183.08 × 236,710.65 - Step 4: Simplify right side
420,408.81x = 137,335,513,985.80 - Step 5: Solve for x
x = 137,335,513,985.80/420,408.81 - Step 6: Final answer
x = 326,671.35
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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.