Finding the Fourth Proportional to 285,278.68, 393,706.74 and 157,966.12
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Solution
The fourth proportional to 285,278.68, 393,706.74 and 157,966.12 is: 218,005.52
Step by Step Solution
- Step 1: Write the proportion equation
285,278.68 : 393,706.74 = 157,966.12 : x - Step 2: Convert to fraction form
285,278.68/393,706.74 = 157,966.12/x - Step 3: Cross multiply
285,278.68x = 393,706.74 × 157,966.12 - Step 4: Simplify right side
285,278.68x = 62,192,326,135.65 - Step 5: Solve for x
x = 62,192,326,135.65/285,278.68 - Step 6: Final answer
x = 218,005.52
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1.5x scale
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.