Finding the Fourth Proportional to 387,972.99, 535,397.58 and 218,207.11
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Solution
The fourth proportional to 387,972.99, 535,397.58 and 218,207.11 is: 301,122.92
Step by Step Solution
- Step 1: Write the proportion equation
387,972.99 : 535,397.58 = 218,207.11 : x - Step 2: Convert to fraction form
387,972.99/535,397.58 = 218,207.11/x - Step 3: Cross multiply
387,972.99x = 535,397.58 × 218,207.11 - Step 4: Simplify right side
387,972.99x = 116,827,558,632.79 - Step 5: Solve for x
x = 116,827,558,632.79/387,972.99 - Step 6: Final answer
x = 301,122.92
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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.