Finding the Fourth Proportional to 210,388.84, 315,515.10 and 70,109.80
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Solution
The fourth proportional to 210,388.84, 315,515.10 and 70,109.80 is: 105,141.99
Step by Step Solution
- Step 1: Write the proportion equation
210,388.84 : 315,515.10 = 70,109.80 : x - Step 2: Convert to fraction form
210,388.84/315,515.10 = 70,109.80/x - Step 3: Cross multiply
210,388.84x = 315,515.10 × 70,109.80 - Step 4: Simplify right side
210,388.84x = 22,120,700,557.98 - Step 5: Solve for x
x = 22,120,700,557.98/210,388.84 - Step 6: Final answer
x = 105,141.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.