Finding the Fourth Proportional to 278,522.20, 417,783.30 and 78,839.99
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Solution
The fourth proportional to 278,522.20, 417,783.30 and 78,839.99 is: 118,259.99
Step by Step Solution
- Step 1: Write the proportion equation
278,522.20 : 417,783.30 = 78,839.99 : x - Step 2: Convert to fraction form
278,522.20/417,783.30 = 78,839.99/x - Step 3: Cross multiply
278,522.20x = 417,783.30 × 78,839.99 - Step 4: Simplify right side
278,522.20x = 32,938,031,194.17 - Step 5: Solve for x
x = 32,938,031,194.17/278,522.20 - Step 6: Final answer
x = 118,259.99
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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.