Finding the Fourth Proportional to 280,368.99, 386,914.50 and 153,049.14
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Solution
The fourth proportional to 280,368.99, 386,914.50 and 153,049.14 is: 211,210.70
Step by Step Solution
- Step 1: Write the proportion equation
280,368.99 : 386,914.50 = 153,049.14 : x - Step 2: Convert to fraction form
280,368.99/386,914.50 = 153,049.14/x - Step 3: Cross multiply
280,368.99x = 386,914.50 × 153,049.14 - Step 4: Simplify right side
280,368.99x = 59,216,931,478.53 - Step 5: Solve for x
x = 59,216,931,478.53/280,368.99 - Step 6: Final answer
x = 211,210.70
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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.