Finding the Fourth Proportional to 312,015,497.80, 468,023,246.70 and 221,316,233.80
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Solution
The fourth proportional to 312,015,497.80, 468,023,246.70 and 221,316,233.80 is: 331,974,350.70
Step by Step Solution
- Step 1: Write the proportion equation
312,015,497.80 : 468,023,246.70 = 221,316,233.80 : x - Step 2: Convert to fraction form
312,015,497.80/468,023,246.70 = 221,316,233.80/x - Step 3: Cross multiply
312,015,497.80x = 468,023,246.70 × 221,316,233.80 - Step 4: Simplify right side
312,015,497.80x = 103,581,142,290,492,288 - Step 5: Solve for x
x = 103,581,142,290,492,288/312,015,497.80 - Step 6: Final answer
x = 331,974,350.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.