Finding the Fourth Proportional to 260,173.80, 390,260.70 and 120,205.80
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Solution
The fourth proportional to 260,173.80, 390,260.70 and 120,205.80 is: 180,308.70
Step by Step Solution
- Step 1: Write the proportion equation
260,173.80 : 390,260.70 = 120,205.80 : x - Step 2: Convert to fraction form
260,173.80/390,260.70 = 120,205.80/x - Step 3: Cross multiply
260,173.80x = 390,260.70 × 120,205.80 - Step 4: Simplify right side
260,173.80x = 46,911,599,652.06 - Step 5: Solve for x
x = 46,911,599,652.06/260,173.80 - Step 6: Final answer
x = 180,308.70
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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.