Finding the Fourth Proportional to 280,685.84, 387,341.93 and 153,358.70
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Solution
The fourth proportional to 280,685.84, 387,341.93 and 153,358.70 is: 211,632.53
Step by Step Solution
- Step 1: Write the proportion equation
280,685.84 : 387,341.93 = 153,358.70 : x - Step 2: Convert to fraction form
280,685.84/387,341.93 = 153,358.70/x - Step 3: Cross multiply
280,685.84x = 387,341.93 × 153,358.70 - Step 4: Simplify right side
280,685.84x = 59,402,253,286.98 - Step 5: Solve for x
x = 59,402,253,286.98/280,685.84 - Step 6: Final answer
x = 211,632.53
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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.