Finding the Fourth Proportional to 280,221,144.79, 386,729,082.99 and 156,485,726.23
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Solution
The fourth proportional to 280,221,144.79, 386,729,082.99 and 156,485,726.23 is: 215,963,650.61
Step by Step Solution
- Step 1: Write the proportion equation
280,221,144.79 : 386,729,082.99 = 156,485,726.23 : x - Step 2: Convert to fraction form
280,221,144.79/386,729,082.99 = 156,485,726.23/x - Step 3: Cross multiply
280,221,144.79x = 386,729,082.99 × 156,485,726.23 - Step 4: Simplify right side
280,221,144.79x = 60,517,581,405,952,088 - Step 5: Solve for x
x = 60,517,581,405,952,088/280,221,144.79 - Step 6: Final answer
x = 215,963,650.61
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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.