Finding the Fourth Proportional to 310,626.18, 465,939.95 and 85,987.26
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Solution
The fourth proportional to 310,626.18, 465,939.95 and 85,987.26 is: 128,981.08
Step by Step Solution
- Step 1: Write the proportion equation
310,626.18 : 465,939.95 = 85,987.26 : x - Step 2: Convert to fraction form
310,626.18/465,939.95 = 85,987.26/x - Step 3: Cross multiply
310,626.18x = 465,939.95 × 85,987.26 - Step 4: Simplify right side
310,626.18x = 40,064,899,195.10 - Step 5: Solve for x
x = 40,064,899,195.10/310,626.18 - Step 6: Final answer
x = 128,981.08
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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.