Finding the Fourth Proportional to 420,595.98, 580,371.39 and 239,330.94
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Solution
The fourth proportional to 420,595.98, 580,371.39 and 239,330.94 is: 330,247.64
Step by Step Solution
- Step 1: Write the proportion equation
420,595.98 : 580,371.39 = 239,330.94 : x - Step 2: Convert to fraction form
420,595.98/580,371.39 = 239,330.94/x - Step 3: Cross multiply
420,595.98x = 580,371.39 × 239,330.94 - Step 4: Simplify right side
420,595.98x = 138,900,830,317.81 - Step 5: Solve for x
x = 138,900,830,317.81/420,595.98 - Step 6: Final answer
x = 330,247.64
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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.