Finding the Fourth Proportional to 420,354.30, 580,101.74 and 239,092.31
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Solution
The fourth proportional to 420,354.30, 580,101.74 and 239,092.31 is: 329,954.66
Step by Step Solution
- Step 1: Write the proportion equation
420,354.30 : 580,101.74 = 239,092.31 : x - Step 2: Convert to fraction form
420,354.30/580,101.74 = 239,092.31/x - Step 3: Cross multiply
420,354.30x = 580,101.74 × 239,092.31 - Step 4: Simplify right side
420,354.30x = 138,697,860,955.65 - Step 5: Solve for x
x = 138,697,860,955.65/420,354.30 - Step 6: Final answer
x = 329,954.66
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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.