Finding the Fourth Proportional to 302,289.13, 416,985.75 and 188,915.05
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Solution
The fourth proportional to 302,289.13, 416,985.75 and 188,915.05 is: 260,594.50
Step by Step Solution
- Step 1: Write the proportion equation
302,289.13 : 416,985.75 = 188,915.05 : x - Step 2: Convert to fraction form
302,289.13/416,985.75 = 188,915.05/x - Step 3: Cross multiply
302,289.13x = 416,985.75 × 188,915.05 - Step 4: Simplify right side
302,289.13x = 78,774,884,331.77 - Step 5: Solve for x
x = 78,774,884,331.77/302,289.13 - Step 6: Final answer
x = 260,594.50
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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.