Finding the Fourth Proportional to 408,567.06, 612,850.59 and 128,106.90
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Solution
The fourth proportional to 408,567.06, 612,850.59 and 128,106.90 is: 192,160.35
Step by Step Solution
- Step 1: Write the proportion equation
408,567.06 : 612,850.59 = 128,106.90 : x - Step 2: Convert to fraction form
408,567.06/612,850.59 = 128,106.90/x - Step 3: Cross multiply
408,567.06x = 612,850.59 × 128,106.90 - Step 4: Simplify right side
408,567.06x = 78,510,389,248.07 - Step 5: Solve for x
x = 78,510,389,248.07/408,567.06 - Step 6: Final answer
x = 192,160.35
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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.