Finding the Fourth Proportional to 420,887.92, 580,801.80 and 239,644.12
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Solution
The fourth proportional to 420,887.92, 580,801.80 and 239,644.12 is: 330,695.49
Step by Step Solution
- Step 1: Write the proportion equation
420,887.92 : 580,801.80 = 239,644.12 : x - Step 2: Convert to fraction form
420,887.92/580,801.80 = 239,644.12/x - Step 3: Cross multiply
420,887.92x = 580,801.80 × 239,644.12 - Step 4: Simplify right side
420,887.92x = 139,185,736,255.42 - Step 5: Solve for x
x = 139,185,736,255.42/420,887.92 - Step 6: Final answer
x = 330,695.49
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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.