Finding the Fourth Proportional to 402,840.99, 555,929.46 and 221,562.09
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Solution
The fourth proportional to 402,840.99, 555,929.46 and 221,562.09 is: 305,760.58
Step by Step Solution
- Step 1: Write the proportion equation
402,840.99 : 555,929.46 = 221,562.09 : x - Step 2: Convert to fraction form
402,840.99/555,929.46 = 221,562.09/x - Step 3: Cross multiply
402,840.99x = 555,929.46 × 221,562.09 - Step 4: Simplify right side
402,840.99x = 123,172,893,050.17 - Step 5: Solve for x
x = 123,172,893,050.17/402,840.99 - Step 6: Final answer
x = 305,760.58
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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.