Finding the Fourth Proportional to 248,490.38, 342,909.11 and 138,108.65
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Solution
The fourth proportional to 248,490.38, 342,909.11 and 138,108.65 is: 190,585.70
Step by Step Solution
- Step 1: Write the proportion equation
248,490.38 : 342,909.11 = 138,108.65 : x - Step 2: Convert to fraction form
248,490.38/342,909.11 = 138,108.65/x - Step 3: Cross multiply
248,490.38x = 342,909.11 × 138,108.65 - Step 4: Simplify right side
248,490.38x = 47,358,712,885.53 - Step 5: Solve for x
x = 47,358,712,885.53/248,490.38 - Step 6: Final answer
x = 190,585.70
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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.