Finding the Fourth Proportional to 312,012,497.80, 468,018,746.70 and 221,313,233.80
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Solution
The fourth proportional to 312,012,497.80, 468,018,746.70 and 221,313,233.80 is: 331,969,850.70
Step by Step Solution
- Step 1: Write the proportion equation
312,012,497.80 : 468,018,746.70 = 221,313,233.80 : x - Step 2: Convert to fraction form
312,012,497.80/468,018,746.70 = 221,313,233.80/x - Step 3: Cross multiply
312,012,497.80x = 468,018,746.70 × 221,313,233.80 - Step 4: Simplify right side
312,012,497.80x = 103,578,742,311,200,080 - Step 5: Solve for x
x = 103,578,742,311,200,080/312,012,497.80 - Step 6: Final answer
x = 331,969,850.70
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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.