Finding the Fourth Proportional to 287,313,868.38, 430,970,808.21 and 68,964,210.42
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Solution
The fourth proportional to 287,313,868.38, 430,970,808.21 and 68,964,210.42 is: 103,446,316.98
Step by Step Solution
- Step 1: Write the proportion equation
287,313,868.38 : 430,970,808.21 = 68,964,210.42 : x - Step 2: Convert to fraction form
287,313,868.38/430,970,808.21 = 68,964,210.42/x - Step 3: Cross multiply
287,313,868.38x = 430,970,808.21 × 68,964,210.42 - Step 4: Simplify right side
287,313,868.38x = 29,721,561,502,271,904 - Step 5: Solve for x
x = 29,721,561,502,271,904/287,313,868.38 - Step 6: Final answer
x = 103,446,316.98
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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.