Finding the Fourth Proportional to 406,133.64, 609,201.68 and 139,890.69
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Solution
The fourth proportional to 406,133.64, 609,201.68 and 139,890.69 is: 209,836.45
Step by Step Solution
- Step 1: Write the proportion equation
406,133.64 : 609,201.68 = 139,890.69 : x - Step 2: Convert to fraction form
406,133.64/609,201.68 = 139,890.69/x - Step 3: Cross multiply
406,133.64x = 609,201.68 × 139,890.69 - Step 4: Simplify right side
406,133.64x = 85,221,642,664.91 - Step 5: Solve for x
x = 85,221,642,664.91/406,133.64 - Step 6: Final answer
x = 209,836.45
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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.