Finding the Fourth Proportional to 420,179.36, 579,823.99 and 238,866.12
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Solution
The fourth proportional to 420,179.36, 579,823.99 and 238,866.12 is: 329,621.87
Step by Step Solution
- Step 1: Write the proportion equation
420,179.36 : 579,823.99 = 238,866.12 : x - Step 2: Convert to fraction form
420,179.36/579,823.99 = 238,866.12/x - Step 3: Cross multiply
420,179.36x = 579,823.99 × 238,866.12 - Step 4: Simplify right side
420,179.36x = 138,500,306,177.05 - Step 5: Solve for x
x = 138,500,306,177.05/420,179.36 - Step 6: Final answer
x = 329,621.87
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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.