Finding the Fourth Proportional to 285,312.60, 393,731.10 and 157,988.19
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Solution
The fourth proportional to 285,312.60, 393,731.10 and 157,988.19 is: 218,023.54
Step by Step Solution
- Step 1: Write the proportion equation
285,312.60 : 393,731.10 = 157,988.19 : x - Step 2: Convert to fraction form
285,312.60/393,731.10 = 157,988.19/x - Step 3: Cross multiply
285,312.60x = 393,731.10 × 157,988.19 - Step 4: Simplify right side
285,312.60x = 62,204,863,835.71 - Step 5: Solve for x
x = 62,204,863,835.71/285,312.60 - Step 6: Final answer
x = 218,023.54
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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.