Finding the Fourth Proportional to 143,497.40, 215,246.10 and 142,575.80
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Solution
The fourth proportional to 143,497.40, 215,246.10 and 142,575.80 is: 213,863.70
Step by Step Solution
- Step 1: Write the proportion equation
143,497.40 : 215,246.10 = 142,575.80 : x - Step 2: Convert to fraction form
143,497.40/215,246.10 = 142,575.80/x - Step 3: Cross multiply
143,497.40x = 215,246.10 × 142,575.80 - Step 4: Simplify right side
143,497.40x = 30,688,884,904.38 - Step 5: Solve for x
x = 30,688,884,904.38/143,497.40 - Step 6: Final answer
x = 213,863.70
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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.