Finding the Fourth Proportional to 402,479.80, 603,719.70 and 215,855.80
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Solution
The fourth proportional to 402,479.80, 603,719.70 and 215,855.80 is: 323,783.70
Step by Step Solution
- Step 1: Write the proportion equation
402,479.80 : 603,719.70 = 215,855.80 : x - Step 2: Convert to fraction form
402,479.80/603,719.70 = 215,855.80/x - Step 3: Cross multiply
402,479.80x = 603,719.70 × 215,855.80 - Step 4: Simplify right side
402,479.80x = 130,316,398,819.26 - Step 5: Solve for x
x = 130,316,398,819.26/402,479.80 - Step 6: Final answer
x = 323,783.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.