Finding the Fourth Proportional to 317,707.81, 476,653.95 and 128,070.31
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Solution
The fourth proportional to 317,707.81, 476,653.95 and 128,070.31 is: 192,142.65
Step by Step Solution
- Step 1: Write the proportion equation
317,707.81 : 476,653.95 = 128,070.31 : x - Step 2: Convert to fraction form
317,707.81/476,653.95 = 128,070.31/x - Step 3: Cross multiply
317,707.81x = 476,653.95 × 128,070.31 - Step 4: Simplify right side
317,707.81x = 61,045,219,139.22 - Step 5: Solve for x
x = 61,045,219,139.22/317,707.81 - Step 6: Final answer
x = 192,142.65
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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.