Finding the Fourth Proportional to 357,989.12, 493,902.06 and 221,974.12
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Solution
The fourth proportional to 357,989.12, 493,902.06 and 221,974.12 is: 306,248.07
Step by Step Solution
- Step 1: Write the proportion equation
357,989.12 : 493,902.06 = 221,974.12 : x - Step 2: Convert to fraction form
357,989.12/493,902.06 = 221,974.12/x - Step 3: Cross multiply
357,989.12x = 493,902.06 × 221,974.12 - Step 4: Simplify right side
357,989.12x = 109,633,474,919.66 - Step 5: Solve for x
x = 109,633,474,919.66/357,989.12 - Step 6: Final answer
x = 306,248.07
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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.