Finding the Fourth Proportional to 354,678.56, 489,389.36 and 211,451.84
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Solution
The fourth proportional to 354,678.56, 489,389.36 and 211,451.84 is: 291,763.56
Step by Step Solution
- Step 1: Write the proportion equation
354,678.56 : 489,389.36 = 211,451.84 : x - Step 2: Convert to fraction form
354,678.56/489,389.36 = 211,451.84/x - Step 3: Cross multiply
354,678.56x = 489,389.36 × 211,451.84 - Step 4: Simplify right side
354,678.56x = 103,482,280,648.42 - Step 5: Solve for x
x = 103,482,280,648.42/354,678.56 - Step 6: Final answer
x = 291,763.56
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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.