Finding the Fourth Proportional to 282,444.05, 389,775.86 and 155,119.65
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Solution
The fourth proportional to 282,444.05, 389,775.86 and 155,119.65 is: 214,066.80
Step by Step Solution
- Step 1: Write the proportion equation
282,444.05 : 389,775.86 = 155,119.65 : x - Step 2: Convert to fraction form
282,444.05/389,775.86 = 155,119.65/x - Step 3: Cross multiply
282,444.05x = 389,775.86 × 155,119.65 - Step 4: Simplify right side
282,444.05x = 60,461,894,981.65 - Step 5: Solve for x
x = 60,461,894,981.65/282,444.05 - Step 6: Final answer
x = 214,066.80
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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.