Finding the Fourth Proportional to 283,136.07, 390,727.85 and 155,811.67
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Solution
The fourth proportional to 283,136.07, 390,727.85 and 155,811.67 is: 215,020.14
Step by Step Solution
- Step 1: Write the proportion equation
283,136.07 : 390,727.85 = 155,811.67 : x - Step 2: Convert to fraction form
283,136.07/390,727.85 = 155,811.67/x - Step 3: Cross multiply
283,136.07x = 390,727.85 × 155,811.67 - Step 4: Simplify right side
283,136.07x = 60,879,957,068.13 - Step 5: Solve for x
x = 60,879,957,068.13/283,136.07 - Step 6: Final answer
x = 215,020.14
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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.