Finding the Fourth Proportional to 258,081,685.40, 356,195,439.09 and 152,260,971.84
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Solution
The fourth proportional to 258,081,685.40, 356,195,439.09 and 152,260,971.84 is: 210,145,340.75
Step by Step Solution
- Step 1: Write the proportion equation
258,081,685.40 : 356,195,439.09 = 152,260,971.84 : x - Step 2: Convert to fraction form
258,081,685.40/356,195,439.09 = 152,260,971.84/x - Step 3: Cross multiply
258,081,685.40x = 356,195,439.09 × 152,260,971.84 - Step 4: Simplify right side
258,081,685.40x = 54,234,663,720,247,952 - Step 5: Solve for x
x = 54,234,663,720,247,952/258,081,685.40 - Step 6: Final answer
x = 210,145,340.75
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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.