Finding the Fourth Proportional to 317,424.15, 438,045.09 and 181,461.09
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Solution
The fourth proportional to 317,424.15, 438,045.09 and 181,461.09 is: 250,416.17
Step by Step Solution
- Step 1: Write the proportion equation
317,424.15 : 438,045.09 = 181,461.09 : x - Step 2: Convert to fraction form
317,424.15/438,045.09 = 181,461.09/x - Step 3: Cross multiply
317,424.15x = 438,045.09 × 181,461.09 - Step 4: Simplify right side
317,424.15x = 79,488,139,500.55 - Step 5: Solve for x
x = 79,488,139,500.55/317,424.15 - Step 6: Final answer
x = 250,416.17
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1.5x scale
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.