Finding the Fourth Proportional to 285,103.41, 393,455.06 and 157,779.05
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Solution
The fourth proportional to 285,103.41, 393,455.06 and 157,779.05 is: 217,741.92
Step by Step Solution
- Step 1: Write the proportion equation
285,103.41 : 393,455.06 = 157,779.05 : x - Step 2: Convert to fraction form
285,103.41/393,455.06 = 157,779.05/x - Step 3: Cross multiply
285,103.41x = 393,455.06 × 157,779.05 - Step 4: Simplify right side
285,103.41x = 62,078,962,828.32 - Step 5: Solve for x
x = 62,078,962,828.32/285,103.41 - Step 6: Final answer
x = 217,741.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.