Finding the Fourth Proportional to 257,459.65, 386,214.41 and 79,918.99
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Solution
The fourth proportional to 257,459.65, 386,214.41 and 79,918.99 is: 119,886.22
Step by Step Solution
- Step 1: Write the proportion equation
257,459.65 : 386,214.41 = 79,918.99 : x - Step 2: Convert to fraction form
257,459.65/386,214.41 = 79,918.99/x - Step 3: Cross multiply
257,459.65x = 386,214.41 × 79,918.99 - Step 4: Simplify right side
257,459.65x = 30,865,864,804.91 - Step 5: Solve for x
x = 30,865,864,804.91/257,459.65 - Step 6: Final answer
x = 119,886.22
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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.