Finding the Fourth Proportional to 415,987.84, 623,981.28 and 135,504.64
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Solution
The fourth proportional to 415,987.84, 623,981.28 and 135,504.64 is: 203,256.80
Step by Step Solution
- Step 1: Write the proportion equation
415,987.84 : 623,981.28 = 135,504.64 : x - Step 2: Convert to fraction form
415,987.84/623,981.28 = 135,504.64/x - Step 3: Cross multiply
415,987.84x = 623,981.28 × 135,504.64 - Step 4: Simplify right side
415,987.84x = 84,552,358,713.14 - Step 5: Solve for x
x = 84,552,358,713.14/415,987.84 - Step 6: Final answer
x = 203,256.80
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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.