Finding the Fourth Proportional to 286,811.80, 430,217.70 and 153,951.55
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Solution
The fourth proportional to 286,811.80, 430,217.70 and 153,951.55 is: 230,927.33
Step by Step Solution
- Step 1: Write the proportion equation
286,811.80 : 430,217.70 = 153,951.55 : x - Step 2: Convert to fraction form
286,811.80/430,217.70 = 153,951.55/x - Step 3: Cross multiply
286,811.80x = 430,217.70 × 153,951.55 - Step 4: Simplify right side
286,811.80x = 66,232,681,752.44 - Step 5: Solve for x
x = 66,232,681,752.44/286,811.80 - Step 6: Final answer
x = 230,927.33
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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.