Finding the Fourth Proportional to 520,789.99, 781,048.29 and 221,116.31
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Solution
The fourth proportional to 520,789.99, 781,048.29 and 221,116.31 is: 331,616.43
Step by Step Solution
- Step 1: Write the proportion equation
520,789.99 : 781,048.29 = 221,116.31 : x - Step 2: Convert to fraction form
520,789.99/781,048.29 = 221,116.31/x - Step 3: Cross multiply
520,789.99x = 781,048.29 × 221,116.31 - Step 4: Simplify right side
520,789.99x = 172,702,517,769.23 - Step 5: Solve for x
x = 172,702,517,769.23/520,789.99 - Step 6: Final answer
x = 331,616.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.