Finding the Fourth Proportional to 310,430.95, 467,720.76 and 280,479.98
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Solution
The fourth proportional to 310,430.95, 467,720.76 and 280,479.98 is: 422,594.17
Step by Step Solution
- Step 1: Write the proportion equation
310,430.95 : 467,720.76 = 280,479.98 : x - Step 2: Convert to fraction form
310,430.95/467,720.76 = 280,479.98/x - Step 3: Cross multiply
310,430.95x = 467,720.76 × 280,479.98 - Step 4: Simplify right side
310,430.95x = 131,186,309,410.39 - Step 5: Solve for x
x = 131,186,309,410.39/310,430.95 - Step 6: Final answer
x = 422,594.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.