Finding the Fourth Proportional to 153,288.38, 211,536.43 and 85,304.21
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Solution
The fourth proportional to 153,288.38, 211,536.43 and 85,304.21 is: 117,718.95
Step by Step Solution
- Step 1: Write the proportion equation
153,288.38 : 211,536.43 = 85,304.21 : x - Step 2: Convert to fraction form
153,288.38/211,536.43 = 85,304.21/x - Step 3: Cross multiply
153,288.38x = 211,536.43 × 85,304.21 - Step 4: Simplify right side
153,288.38x = 18,044,946,776.43 - Step 5: Solve for x
x = 18,044,946,776.43/153,288.38 - Step 6: Final answer
x = 117,718.95
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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.