Finding the Fourth Proportional to 487,239.12, 672,394.77 and 272,390.94
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Solution
The fourth proportional to 487,239.12, 672,394.77 and 272,390.94 is: 375,902.17
Step by Step Solution
- Step 1: Write the proportion equation
487,239.12 : 672,394.77 = 272,390.94 : x - Step 2: Convert to fraction form
487,239.12/672,394.77 = 272,390.94/x - Step 3: Cross multiply
487,239.12x = 672,394.77 × 272,390.94 - Step 4: Simplify right side
487,239.12x = 183,154,243,451.38 - Step 5: Solve for x
x = 183,154,243,451.38/487,239.12 - Step 6: Final answer
x = 375,902.17
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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.