Finding the Fourth Proportional to 229,432.08, 316,731.36 and 143,438.80
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Solution
The fourth proportional to 229,432.08, 316,731.36 and 143,438.80 is: 198,017.50
Step by Step Solution
- Step 1: Write the proportion equation
229,432.08 : 316,731.36 = 143,438.80 : x - Step 2: Convert to fraction form
229,432.08/316,731.36 = 143,438.80/x - Step 3: Cross multiply
229,432.08x = 316,731.36 × 143,438.80 - Step 4: Simplify right side
229,432.08x = 45,431,566,200.77 - Step 5: Solve for x
x = 45,431,566,200.77/229,432.08 - Step 6: Final answer
x = 198,017.50
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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.