Finding the Fourth Proportional to 285,312.42, 393,731.12 and 157,988.03
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Solution
The fourth proportional to 285,312.42, 393,731.12 and 157,988.03 is: 218,023.46
Step by Step Solution
- Step 1: Write the proportion equation
285,312.42 : 393,731.12 = 157,988.03 : x - Step 2: Convert to fraction form
285,312.42/393,731.12 = 157,988.03/x - Step 3: Cross multiply
285,312.42x = 393,731.12 × 157,988.03 - Step 4: Simplify right side
285,312.42x = 62,204,801,239.90 - Step 5: Solve for x
x = 62,204,801,239.90/285,312.42 - Step 6: Final answer
x = 218,023.46
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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.