Finding the Fourth Proportional to 429,392.93, 644,190.55 and 129,875.99
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Solution
The fourth proportional to 429,392.93, 644,190.55 and 129,875.99 is: 194,844.57
Step by Step Solution
- Step 1: Write the proportion equation
429,392.93 : 644,190.55 = 129,875.99 : x - Step 2: Convert to fraction form
429,392.93/644,190.55 = 129,875.99/x - Step 3: Cross multiply
429,392.93x = 644,190.55 × 129,875.99 - Step 4: Simplify right side
429,392.93x = 83,664,881,884.25 - Step 5: Solve for x
x = 83,664,881,884.25/429,392.93 - Step 6: Final answer
x = 194,844.57
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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.