Finding the Fourth Proportional to 420,219.99, 579,952.17 and 233,970.21
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Solution
The fourth proportional to 420,219.99, 579,952.17 and 233,970.21 is: 322,905.94
Step by Step Solution
- Step 1: Write the proportion equation
420,219.99 : 579,952.17 = 233,970.21 : x - Step 2: Convert to fraction form
420,219.99/579,952.17 = 233,970.21/x - Step 3: Cross multiply
420,219.99x = 579,952.17 × 233,970.21 - Step 4: Simplify right side
420,219.99x = 135,691,531,004.86 - Step 5: Solve for x
x = 135,691,531,004.86/420,219.99 - Step 6: Final answer
x = 322,905.94
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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.