Finding the Fourth Proportional to 408,400.96, 612,666.84 and 142,237.12
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Solution
The fourth proportional to 408,400.96, 612,666.84 and 142,237.12 is: 213,378.46
Step by Step Solution
- Step 1: Write the proportion equation
408,400.96 : 612,666.84 = 142,237.12 : x - Step 2: Convert to fraction form
408,400.96/612,666.84 = 142,237.12/x - Step 3: Cross multiply
408,400.96x = 612,666.84 × 142,237.12 - Step 4: Simplify right side
408,400.96x = 87,143,966,841.10 - Step 5: Solve for x
x = 87,143,966,841.10/408,400.96 - Step 6: Final answer
x = 213,378.46
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.