Finding the Fourth Proportional to 286,721.99, 395,686.49 and 157,670.31
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Solution
The fourth proportional to 286,721.99, 395,686.49 and 157,670.31 is: 217,590.61
Step by Step Solution
- Step 1: Write the proportion equation
286,721.99 : 395,686.49 = 157,670.31 : x - Step 2: Convert to fraction form
286,721.99/395,686.49 = 157,670.31/x - Step 3: Cross multiply
286,721.99x = 395,686.49 × 157,670.31 - Step 4: Simplify right side
286,721.99x = 62,388,010,752.76 - Step 5: Solve for x
x = 62,388,010,752.76/286,721.99 - Step 6: Final answer
x = 217,590.61
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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.