Finding the Fourth Proportional to 289,282,476.06, 399,203,026.99 and 170,212,780.33
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Solution
The fourth proportional to 289,282,476.06, 399,203,026.99 and 170,212,780.33 is: 234,889,641.66
Step by Step Solution
- Step 1: Write the proportion equation
289,282,476.06 : 399,203,026.99 = 170,212,780.33 : x - Step 2: Convert to fraction form
289,282,476.06/399,203,026.99 = 170,212,780.33/x - Step 3: Cross multiply
289,282,476.06x = 399,203,026.99 × 170,212,780.33 - Step 4: Simplify right side
289,282,476.06x = 67,949,457,140,119,936 - Step 5: Solve for x
x = 67,949,457,140,119,936/289,282,476.06 - Step 6: Final answer
x = 234,889,641.66
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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.