Finding the Fourth Proportional to 306,623.62, 423,140.49 and 172,487.62
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Solution
The fourth proportional to 306,623.62, 423,140.49 and 172,487.62 is: 238,032.86
Step by Step Solution
- Step 1: Write the proportion equation
306,623.62 : 423,140.49 = 172,487.62 : x - Step 2: Convert to fraction form
306,623.62/423,140.49 = 172,487.62/x - Step 3: Cross multiply
306,623.62x = 423,140.49 × 172,487.62 - Step 4: Simplify right side
306,623.62x = 72,986,496,045.73 - Step 5: Solve for x
x = 72,986,496,045.73/306,623.62 - Step 6: Final answer
x = 238,032.86
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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.