Finding the Fourth Proportional to 401,931.09, 602,890.47 and 135,878.49
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Solution
The fourth proportional to 401,931.09, 602,890.47 and 135,878.49 is: 203,815.65
Step by Step Solution
- Step 1: Write the proportion equation
401,931.09 : 602,890.47 = 135,878.49 : x - Step 2: Convert to fraction form
401,931.09/602,890.47 = 135,878.49/x - Step 3: Cross multiply
401,931.09x = 602,890.47 × 135,878.49 - Step 4: Simplify right side
401,931.09x = 81,919,846,698.99 - Step 5: Solve for x
x = 81,919,846,698.99/401,931.09 - Step 6: Final answer
x = 203,815.65
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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.