Finding the Fourth Proportional to 312,297.91, 430,870.10 and 191,312.95
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Solution
The fourth proportional to 312,297.91, 430,870.10 and 191,312.95 is: 263,949.99
Step by Step Solution
- Step 1: Write the proportion equation
312,297.91 : 430,870.10 = 191,312.95 : x - Step 2: Convert to fraction form
312,297.91/430,870.10 = 191,312.95/x - Step 3: Cross multiply
312,297.91x = 430,870.10 × 191,312.95 - Step 4: Simplify right side
312,297.91x = 82,431,028,941.23 - Step 5: Solve for x
x = 82,431,028,941.23/312,297.91 - Step 6: Final answer
x = 263,949.99
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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.