Finding the Fourth Proportional to 420,498.99, 580,288.41 and 229,512.36
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Solution
The fourth proportional to 420,498.99, 580,288.41 and 229,512.36 is: 316,726.95
Step by Step Solution
- Step 1: Write the proportion equation
420,498.99 : 580,288.41 = 229,512.36 : x - Step 2: Convert to fraction form
420,498.99/580,288.41 = 229,512.36/x - Step 3: Cross multiply
420,498.99x = 580,288.41 × 229,512.36 - Step 4: Simplify right side
420,498.99x = 133,183,362,459.75 - Step 5: Solve for x
x = 133,183,362,459.75/420,498.99 - Step 6: Final answer
x = 316,726.95
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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.