Finding the Fourth Proportional to 147,971.80, 221,973.90 and 143,306.20
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Solution
The fourth proportional to 147,971.80, 221,973.90 and 143,306.20 is: 214,974.99
Step by Step Solution
- Step 1: Write the proportion equation
147,971.80 : 221,973.90 = 143,306.20 : x - Step 2: Convert to fraction form
147,971.80/221,973.90 = 143,306.20/x - Step 3: Cross multiply
147,971.80x = 221,973.90 × 143,306.20 - Step 4: Simplify right side
147,971.80x = 31,810,236,108.18 - Step 5: Solve for x
x = 31,810,236,108.18/147,971.80 - Step 6: Final answer
x = 214,974.99
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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.